Malicious PDF — malware analysis report

Static analysis result for SHA-256 346ee6f4ee6d6ac8…

MALICIOUS

PDF

89.5 KB Created: 2021-03-02 17:49:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 9dd3b1000e5e5a1ecca97ec65a3e50b7 SHA-1: 1ffa9395e6a01f8b22fbf6961775263bb7572b13 SHA-256: 346ee6f4ee6d6ac8dcb56bf59e4d0773b9181da5ef949d3fdac4b2af10084248
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicative of a link farm designed to host malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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 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://vilenefex.ru/wix?keyword=otometeki+koi+kakumei+love+revo+english+download+pc PDF link annotation
    • http://gradstroy.su/vewekuwobojasefopixiha2h.pdfIn PDF document text
    • http://nemugub.mywebcommunity.org/98359417495.pdfIn PDF document text
    • http://xuxijosut.sportsontheweb.net/5671129610.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/9jhehcr/civ_v_combat_simulator.pdfIn PDF document text
    • http://roxelejabojafe.scienceontheweb.net/how_to_boxing_at_home.pdfIn PDF document text
    • http://cosmostil.top/1991_acura_integra_repair_manual_free_downloadepuyz.pdfIn PDF document text
    • https://cdn.sqhk.co/jalafimimodo/iahcgiJ/fivomapobomevoretumemefej.pdfIn PDF document text
    • http://tronreserve.online/teleduba4tbd6.pdfIn PDF document text
    • http://ladirojenovezoj.mygamesonline.org/47196999228.pdfIn PDF document text
    • http://riniwodifole.medianewsonline.com/2187649800.pdfIn PDF document text
    • https://cdn.sqhk.co/zexetiminav/igE4jfn/wikesado.pdfIn PDF document text
    • https://cdn.sqhk.co/toromerepowa/iflJjh7/iphone_xr_black_friday_deals_2019_apple_store.pdfIn PDF document text
    • http://nakozek.mypressonline.com/80809557880.pdfIn PDF document text
    • http://copyright-helps-team.com/budunimevelozap3nw6k.pdfIn PDF document text
    • http://netopodimamo.mywebcommunity.org/18215618455.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
    • https://s3.amazonaws.com/tuxexi/singer_chitra_tamil_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/what_does_carbon-14_dating_mean_in_science.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/batman_arkham_city_lockdown_google_play.pdfIn PDF document text
    • http://nakarajibap.myartsonline.com/the_mystery_knight_page_count.pdfIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00011069.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11069 1540 bytes
SHA-256: 4d568a945d33b2807344969b26bb82d84ddb77bc4bee0647fcdf0cef449409d1
font_00_sfnt_off0000e647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE647 6504 bytes
SHA-256: c5cabf0ca910e4412b889fd3d5fc8dae942c61183d655ff8633642c0e3e08b5a
font_01_sfnt_off0000fd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD04 5728 bytes
SHA-256: b99015ef60c40d737351fb7de37d7a4755c8677659811e867443bf0575bc3a1d
font_03_sfnt_off000118af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118AF 10920 bytes
SHA-256: fad7cb6432293aa4a391e7efb6c3104332635702012eaa7769308e84a44485cd
font_04_sfnt_off00013e5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E5E 16572 bytes
SHA-256: 93b129b31cc511c32a455ee78d648e9a4448138be60d8d79da5c0bcdfea5357d

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