Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bce245b2482c66b…

MALICIOUS

PDF

78.5 KB Created: 2021-03-08 15:51:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 814320bda717c102c08a365678fc1e0e SHA-1: 9a3395f64f5787328ee34a68a6baf0050a5d1427 SHA-256: 0bce245b2482c66b6eb385e80f5e44834b4a6174b3fc7989351b3004009c81c9
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wix?keyword=autozone+price+match+amazon PDF link annotation
    • https://cdn.sqhk.co/videgogaf/Tihjihe/43154760507.pdfIn PDF document text
    • https://jajibesuwazigix.weebly.com/uploads/1/3/1/3/131383486/puvazipu-wixunumuloz-demewufawurof-woxug.pdfIn PDF document text
    • https://nujujuzizupefe.weebly.com/uploads/1/3/1/6/131606206/ziwojofu.pdfIn PDF document text
    • http://sosogemizibu.mypressonline.com/jefeduxagodazewaka.pdfIn PDF document text
    • https://niridugur.weebly.com/uploads/1/3/5/2/135296669/bugutur.pdfIn PDF document text
    • https://cdn.sqhk.co/mimofeto/eD28ZCU/wifi_password_recovery_pro_apkpure.pdfIn PDF document text
    • https://dezuximoloxesar.weebly.com/uploads/1/3/1/4/131410685/56c2f2765.pdfIn PDF document text
    • http://dadivasim.sportsontheweb.net/dell_optiplex_960_manual.pdfIn PDF document text
    • http://peluxuba.sportsontheweb.net/i_cant_share_someones_post_on_facebook.pdfIn PDF document text
    • https://xevefozivoro.weebly.com/uploads/1/3/5/3/135339272/26c29f2e.pdfIn PDF document text
    • https://nukivobiwej.weebly.com/uploads/1/3/4/0/134016752/kiromokerekifinijo.pdfIn PDF document text
    • https://cdn.sqhk.co/rusefijow/jg7wThj/pupesuvotiwegevogavupov.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/lotus_caravans_for_sale_qld.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/aab3e02a-4977-4693-b950-c79c1a118680/kadowego.pdfIn PDF document text
    • http://guwaxilajoxeza.onlinewebshop.net/how_to_fix_install_black_cartridge_error.pdfIn PDF document text
    • http://nivuzujanux.myartsonline.com/stealth_cam_sd_card_reader_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/412e4419-8a7c-4f79-adfa-cfab260623a2/surf_fishing_rods_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98ab67ef-9af7-46c9-bcb8-29b3d04beb9b/panasonic_kx-tg9581b_manual.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF6 5000 bytes
SHA-256: a0b44f1b464116dce605c92b65430252e1cb11b5f2f1eb5acf2413df0a42fa0d
font_01_sfnt_off0000ffc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC9 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00010857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10857 10636 bytes
SHA-256: 2558e5343b356099c8d93c009d18d4c8bfad6581800816095a3c3cb2b7c7a3ec