Malicious PDF — malware analysis report

Static analysis result for SHA-256 568b479f023bf131…

MALICIOUS

PDF

112.3 KB Created: 2021-03-25 02:06:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: e36ca21ed001fb356a78e956df9026c2 SHA-1: c3d3df03babcbdbc161d5ddd1828c5e3253dccb7 SHA-256: 568b479f023bf131139a030a8c5083d112a6aacc5a9db75ac29228a76a2f04e7
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains a large number of embedded links, many pointing to disposable hosting or known malicious redirectors. The heuristic firings indicate it's designed as a link farm, likely to manipulate search engine results or redirect users to malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9503

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://dafemum.ru/award?keyword=swayamvara+parvathi+mantra+in+malayalam+pdf In PDF document text
    • https://kilizilefepik.weebly.com/uploads/1/3/0/7/130775254/50263495381303.pdfIn PDF document text
    • http://rent-nout.site/vatadunijukonedanufusupod73vne.pdfIn PDF document text
    • https://fodukajanewirom.weebly.com/uploads/1/3/5/3/135383911/tatasaxid.pdfIn PDF document text
    • https://cdn.sqhk.co/raluzafa/hggfje1/hakan_agro_dmcc_annual_report.pdfIn PDF document text
    • http://intekzafast.online/esl_countries_and_nationalities_worksheetf2xpz.pdfIn PDF document text
    • https://cdn.sqhk.co/rojotuwo/fpPgjjb/telugu_bible_file.pdfIn PDF document text
    • https://jimivisimobud.weebly.com/uploads/1/3/4/9/134901817/zotasuzadaw.pdfIn PDF document text
    • http://netewe8.xyz/frightful_s_mountain0i7q0.pdfIn PDF document text
    • https://zefivevolexu.weebly.com/uploads/1/3/1/6/131637056/tereganix.pdfIn PDF document text
    • https://revekabidumuki.weebly.com/uploads/1/3/2/7/132710675/wetukozuxonitupivo.pdfIn PDF document text
    • https://cdn.sqhk.co/lizasizova/GZjjAFw/shooting_grizzly_bear_youtube.pdfIn PDF document text
    • https://salupoxegiras.weebly.com/uploads/1/3/5/9/135961269/9116960.pdfIn PDF document text
    • http://lolkek.xyz/zigurawesix0vd1.pdfIn PDF document text
    • http://cosmosqrab.online/ramulawalubutagiv0a4m.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/cgdApMD/bombastic_synonym_crossword.pdfIn PDF document text
    • http://cetapp.xyz/232929919t6j5v.pdfIn PDF document text
    • http://moitender.org/charlie_malayalam_movie_tamil_dubbed_tamilrockersvxprw.pdfIn PDF document text
    • https://bofetolukolun.weebly.com/uploads/1/3/4/0/134018575/9050331.pdfIn PDF document text
    • http://nefritthebestthing.site/body_builder_photoyq0mu.pdfIn PDF document text
    • http://italiahot.space/what_does_apostolic_succession_protect_the_church_fromx07ih.pdfIn PDF document text
    • http://flowerport.store/ctet_syllabus_2018hbpds.pdfIn PDF document text
    • https://sudororurupe.weebly.com/uploads/1/3/4/6/134602833/d464de.pdfIn PDF document text
    • http://okrasote.info/who_played_pippi_longstocking_in_the_movieiobvc.pdfIn PDF document text
    • http://santaparker.store/2015_cadillac_srx_performance_reviewc8z98.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text

Extracted artifacts 10

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off00013fa0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13FA0 3416 bytes
SHA-256: 0a86ea4adafe994c7d1fb05e5c5d283b8363fb4643356f8fc51576a6da6c440b
font_00_sfnt_off0000fe39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE39 5460 bytes
SHA-256: d15e230905d723b217f03d3840e3760ac1f9b78af53a63c0dfcf715af180e074
font_01_sfnt_off000110ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110BA 5036 bytes
SHA-256: c77271d81531896126a328af1b9e9fc392512101207b6b51adf3e2f254b90ebb
font_02_sfnt_off000120cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120CB 4428 bytes
SHA-256: 428370bde5bdacddb29fce42c0ced1ff1382e4999b5a57e00c3b1124972bcc25
font_03_sfnt_off00012f1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F1A 4312 bytes
SHA-256: 7b7aa6cbc98c15d760ca55359708a3870d290ae1c47f19a38063e4eeeaafaa23
font_05_sfnt_off00014d1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D1E 5976 bytes
SHA-256: 74ff578d2e4edf22d612e10c7372f462595f4d370e2eea5e1a27253af8dae1e3
font_06_sfnt_off00015fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FD7 4164 bytes
SHA-256: 42f5a382999fd82507549032d774d0efa50d75406a2ccc5e55e40eed612a47d7
font_07_sfnt_off00016cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CDA 11136 bytes
SHA-256: bcb9c1a367c0f85040c5acb4efd56b786752aeb568000ee9c4f0674200f10d85
font_08_sfnt_off00019263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19263 4144 bytes
SHA-256: 828f941d94ca10b3c92720ef2b2a97d82035a33ae6fcf92b4210195fcfa49c3b
font_09_sfnt_off0001a21e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A21E 2584 bytes
SHA-256: b27cc544ee1db5c47cde9d8751549cd15c1df78a4486cfaa2d8f4fabf58741f9

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