Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d39c3c60560abe3…

MALICIOUS

PDF

68.4 KB Created: 2021-02-08 01:42:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 22b25cdca052102932f7dcaa33993b14 SHA-1: 53165e506ee07174570ff8b0298e547741b4bd36 SHA-256: 4d39c3c60560abe3e995ea6527e63a06edfe5c3cec3cb42b51ef91a3487b10d6
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=john%20deere%201025r%20spec%20sheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368997/normal_601b3f6ab35be.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefima/giILFjv/sojupabenogaraged.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425919/normal_5fc8e107a6d50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496605/normal_5ff7c41509c93.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448330/normal_5fec0a838b10a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459324/normal_5fd262344b8a5.pdfIn PDF document text
    • https://cdn.sqhk.co/vetukalujir/bjeijq9/16199406781.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/mujesogi/fafokon.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/ejercicios_teorema_bolzano_y_rolle.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/messenger_video_call_for_windows_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/69156440153.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/44763674737.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/mokusodoratopanis.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/guitar_beginner_guide_book.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/bearing_types_and_numbering_system.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_off0000ce01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE01 5360 bytes
SHA-256: 3d6341c603c3a6eecc883ed41f60a58529ca31e46e16ea414d2fc546d7c8a8d7
font_01_sfnt_off0000e03f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03F 10736 bytes
SHA-256: 33dada9ea0cad16f42a64e982ab8b155b0fa5f54c73dd8dc8ce13f4aba69d209