Malicious PDF — malware analysis report

Static analysis result for SHA-256 4abf69885367fc5f…

MALICIOUS

PDF

76.6 KB Created: 2021-02-07 09:40:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f8651e28fd09472826e1d7e421cd0101 SHA-1: f9b861241a4ab15750deb0f603d820c839986672 SHA-256: 4abf69885367fc5fab02afe351a9a53408ed9ddfb2a395aeab7cc87e999c8c1b
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=uninstall%20bloatware%20android%20adb PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4428083/normal_5fd09213d73d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378623/normal_5fd7c46faa4c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445743/normal_60021c546d3bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449392/normal_5fed6768048a4.pdfIn PDF document text
    • https://cdn.sqhk.co/tirazirevemu/9MDihji/2010730870.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366354/normal_5fe2f43a4302c.pdfIn PDF document text
    • http://andyhongdigital.com/14609986258nyd97.pdfIn PDF document text
    • http://www19216801.site/saab_9-_3_repair_manualga85n.pdfIn PDF document text
    • http://hisgohar.site/mexivotovruij9.pdfIn PDF document text
    • http://mebelintera.ru/xokoretegojeqrz70.pdfIn PDF document text
    • http://mklhhhh.space/stalker_call_of_pripyat_misery8xjlw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://konazosite.epizy.com/40244525322.pdfIn PDF document text
    • http://kosener.epizy.com/dajonazizudapaxul.pdfIn PDF document text
    • http://zujazeku.epizy.com/flip_flop_jk_7474_datasheet.pdfIn PDF document text
    • http://pasazaxara.rf.gd/vodilu.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_off0000ee9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9F 5040 bytes
SHA-256: b4849c9b6610a29581f0bf2450db4ef9dc9a10c38e333c1b54b862f25a5eba4a
font_01_sfnt_off0000ffe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE0 11048 bytes
SHA-256: 98ea1fd1a04ece2173af57eb4acfaa4e96d13898bd12d9ab6220e020c8676330