Malicious PDF — malware analysis report

Static analysis result for SHA-256 c460222de347262a…

MALICIOUS

PDF

72.0 KB Created: 2021-01-28 04:09:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 24fbc5930d446710e551d2cf202d4aed SHA-1: e7c46dbca26df07672d9b9a134fc8f3a4a0aca6d SHA-256: c460222de347262afc1f568da7c0942db44d4bfb3a119e2b2e6e585caf636532
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://druttle.ru/wb?keyword=does%20howard%20wolowitz%20mom%20die PDF link annotation
    • http://twitter-center.com/jovodekumafezeretijqtyze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471959/normal_5fdf723e2b011.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416928/normal_5fdf0194b758f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501208/normal_5fc95308251d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421788/normal_600344a79d0eb.pdfIn PDF document text
    • http://7evenrp.ru/zombie_defense_castle_empire13tqb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411480/normal_600f735a145ab.pdfIn PDF document text
    • http://logvoz.ru/background_check_consent_formjr7xm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467274/normal_5fcef38da870c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466675/normal_5fd7aba7eca3f.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/rubidokezive/escape_room_game_answers_level_110.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/change_navigation_bar_size_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/buvugujadudaxafu.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/mipamutixir.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/65478666081.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_off0000dc74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC74 5204 bytes
SHA-256: aa276ac0881b87e480dcfcbaae0f59f8b6330f20a18a5c09f075483313c935c7
font_01_sfnt_off0000ee1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1B 10848 bytes
SHA-256: bd0fe8edc2d30ec1b70cf9a3dd9249a575911ed9cb14623441a63d4df5acf696