Malicious PDF — malware analysis report

Static analysis result for SHA-256 867e491f61079f70…

MALICIOUS

PDF

71.6 KB Created: 2021-02-09 17:29:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e63444928d05796b41a7534804ed03d6 SHA-1: 70af1facb18d1ef2945e35ff4c1bfb3ed96689e6 SHA-256: 867e491f61079f70eda2089ddeaf6268f521e1ac51670a3b532ecb2e78e681dd
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/aws?utm_term=champaign+county+ohio+sheriff+reports PDF link annotation
    • https://jowidirususonin.weebly.com/uploads/1/3/0/7/130775515/1a72f6.pdfIn PDF document text
    • https://cdn.sqhk.co/zasemewiti/Rhb8Kia/zabefatetufokafebujexij.pdfIn PDF document text
    • http://lienforkid.com/home_design_3d_app_for_android_free_download7813p.pdfIn PDF document text
    • http://gazzsheff.xyz/lopekutimasitiluvixa32z.pdfIn PDF document text
    • http://grigolia-studio.ru/sample_legal_advice_letter_to_clientpd4c1.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/gfjhijG/sasimaweziladif.pdfIn PDF document text
    • https://cdn.sqhk.co/xezufulozuwo/jWjfe4p/best_multiplayer_shooter_games_on_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/lutidofele/6wxgjgg/milikavupugorobafalugasu.pdfIn PDF document text
    • http://obsluzhivanie-kompyuterov.moscow/mastose_mammaire_et_stressrofnj.pdfIn PDF document text
    • http://santecmb-sarl.com/nagemireridegosesegedipafaa2rv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://webimonok.epizy.com/46209999840.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/chrome_addons_json_formatter.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/wiroregodixaxolakagukakun.pdfIn PDF document text
    • http://debukigezi.epizy.com/22903357120.pdfIn PDF document text
    • http://wikilupari.epizy.com/vowinodojefaguv.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA61 5404 bytes
SHA-256: b0f4e5e6906c38001f6fe6d1d74e961206e20dbf531d506c29f176f3f4871680
font_01_sfnt_off0000eca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA3 10824 bytes
SHA-256: 19a7d79ba0634374a0c2f0fc5491019d76b4d0de033a05c566dc0d633753bfc8