Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ce270074f61b2cf…

MALICIOUS

PDF

92.0 KB Created: 2021-03-31 15:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0a0877fb8b6ac145328ca0ff1271f140 SHA-1: dd0decfa332403a3cb5f9525b8e8b52b73fa766d SHA-256: 3ce270074f61b2cf49589c0af5570a60775e7228b26c11d234da6700357d11b5
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to disposable domains, indicating a link farm or phishing operation. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a phishing or malware distribution attempt, likely leveraging embedded JavaScript for redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xezojetit.ru/strik?utm_term=how+to+make+homemade+pizza+dough+with+fresh+yeast PDF link annotation
    • https://juwibaviwexufeb.weebly.com/uploads/1/3/0/7/130739975/voruxegipajud.pdfIn PDF document text
    • https://tetoxoji.weebly.com/uploads/1/3/0/9/130969306/zegenuzafalenid.pdfIn PDF document text
    • https://gumagujex.weebly.com/uploads/1/3/5/3/135309175/a47044ffa82.pdfIn PDF document text
    • http://ing-cliente.com/jump_shoot_manfaatov9zs.pdfIn PDF document text
    • http://normab-id.com/geronimo_stilton_series_1_collection_10_books_box_setf69qb.pdfIn PDF document text
    • http://gomesuzos.mypressonline.com/que_son_las_bpm_en_alimentos.pdfIn PDF document text
    • http://budokudepa.scienceontheweb.net/nfhs_baseball_rules_2020.pdfIn PDF document text
    • https://fipufiradak.weebly.com/uploads/1/3/0/8/130813779/zujapawelo-fivoxikaxovuxij-gepokonuguziwaj.pdfIn PDF document text
    • http://pinegobojefo.getenjoyment.net/67181956556.pdfIn PDF document text
    • http://deutschebank-meine.com/how_to_add_and_subtract_radicals_with_different_radicandn599k.pdfIn PDF document text
    • http://noxavikadovul.mypressonline.com/amazing_grace_piano_easy.pdfIn PDF document text
    • https://gaturavokig.weebly.com/uploads/1/3/4/3/134317265/c32a65f2edc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://rorazizaxaf.atwebpages.com/64852030611.pdfIn PDF document text
    • http://zizajaw.epizy.com/brother_bear_game_pc_free.pdfIn PDF document text
    • http://molujafit.atwebpages.com/sedonubunapakebatajosowam.pdfIn PDF document text
    • http://sazasewugekupej.onlinewebshop.net/wakedosekalokiwakadi.pdfIn PDF document text
    • http://kopolug.myartsonline.com/55995085992.pdfIn PDF document text
    • http://wotituxisu.rf.gd/56411100183.pdfIn PDF document text
    • http://lojubefogugiku.onlinewebshop.net/is_genie_2_worth_it.pdfIn PDF document text
    • https://0c2a7d7b-be9d-4ef2-a94c-09ca905cc17d.filesusr.com/ugd/7d21c0_95ff8337c84e478f8767f43bf127f1b2.pdf?index=trueIn PDF document text
    • http://nomapalugaji.epizy.com/diperexexubesizivevalani.pdfIn PDF document text
    • http://selebelajub.rf.gd/18063712236.pdfIn PDF document text
    • https://1618b3f4-dcc0-4047-a816-eeb1cbe43c51.filesusr.com/ugd/a01749_c709d72db45e4bf7afa832eb03fae990.pdf?index=trueIn PDF document text
    • http://sujidise.epizy.com/is_there_a_fight_club_in_red_dead_redemption_2.pdfIn PDF document text
    • https://57933e30-1e86-4cbe-ad2b-777cb72f9932.filesusr.com/ugd/235f1a_f155753ace0d47378db6e4bce9b3f1e5.pdf?index=trueIn 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E9A 5468 bytes
SHA-256: 59f815c020399982068766f2c6523d68010672b339c20f0c10d508c1be98e808
font_01_sfnt_off0001214c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1214C 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off000129da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129DA 12340 bytes
SHA-256: 98c581be93d4b4ffa674ea9447b5fd5a0b7efbfbdfa47c96c1a7a6bb2ca03422
font_03_sfnt_off0001535f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1535F 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3