Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c9d5d97e2ff8c75…

MALICIOUS

PDF

73.1 KB Created: 2021-02-26 19:38:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f702ee4b089ee6bdb4bd369609f193de SHA-1: 2b0ff967cfd86913abcaf962244d55ad546d2c9b SHA-256: 2c9d5d97e2ff8c759d05a1d590c9472416417c612b8418de0b3bf5486fea7223
196 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
  • 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.
  • 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.
  • 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://botokaw.ru/wix?keyword=sniper+3d+apk+mod+unlimited+diamond PDF link annotation
    • https://tanofome.weebly.com/uploads/1/3/5/3/135316841/9fb61cc8cd299.pdfIn PDF document text
    • https://kixarazebeda.weebly.com/uploads/1/3/0/7/130776474/2051585.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475987/normal_6001a41012e7d.pdfIn PDF document text
    • https://metatigizedi.weebly.com/uploads/1/3/1/3/131398099/7668623.pdfIn PDF document text
    • https://rajuvafawomok.weebly.com/uploads/1/3/4/4/134455823/gixesedegixu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455876/normal_5fd85a9531090.pdfIn PDF document text
    • https://kajovagej.weebly.com/uploads/1/3/4/7/134747054/luzepiwixaradiveb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379030/normal_5fe807bd64389.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zamuriza/media_and_information_literacy_curriculum_guide.pdfIn PDF document text
    • http://xuxuxal.epizy.com/susakova.pdfIn PDF document text
    • https://s3.amazonaws.com/wakuzidi/graphic_design_background_free.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/23477766308.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/langrisser_equipment_guide_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/landlord_adverse_action_notice_template.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_off0000e269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE269 5260 bytes
SHA-256: 8c3cd359e8db72651a7e3ef1f3393ff2c4a717dc331ab2619fb4eaa4f4424ec7
font_01_sfnt_off0000f43b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF43B 10136 bytes
SHA-256: d9dca7c28c7203451a02cfdf45bdcf7eae89af0f33db6d52614fd481b367154e