Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aa74c9ce0132a22…

MALICIOUS

PDF

69.7 KB Created: 2021-02-17 00:02:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 52b86db754ae9bf0de859d464b7dffcf SHA-1: 7fc1164137ec5e293ab23bb216a455db93ad69c4 SHA-256: 0aa74c9ce0132a2279a59be367c7e8fc65f44043a5feb0a695207cd73d870c2f
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://maypoin.ru/123?utm_term=hp+laserjet+pro+p1606dn+toner+compatible PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380405/normal_5fcedc42aa33c.pdfIn PDF document text
    • http://bit7.top/bifudw9zg8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495558/normal_600ebc557c458.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474985/normal_6008c2b687629.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503874/normal_6011f2ccb9e02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488329/normal_5fde826ec7d5e.pdfIn PDF document text
    • http://salonly.xyz/what_are_the_similarities_of_apple_and_orangeh3l8v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495838/normal_600da74e0c686.pdfIn PDF document text
    • http://lishop.site/dasar_mekanika_tanah4jxgd.pdfIn PDF document text
    • http://avtovishki-msk.ru/ind_vs_pak_match_weather_reportmb4pb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443326/normal_6011992e4e318.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491412/normal_602318892387f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452609/normal_5fe9243faf6b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366354/normal_5fee8f779c85c.pdfIn PDF document text
    • http://rentline.pro/kids_in_a_sandbox_videoc6i23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386076/normal_600d274f97054.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488570/normal_5ff283421f9cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427287/normal_60225bc6bad0a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d14c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD14C 5744 bytes
SHA-256: f23f1efc7681fe7221ad51ecf3f1e643489b8edbdf01b1e9adbc1521125028f5
font_01_sfnt_off0000e4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BB 10872 bytes
SHA-256: 6a0a982c970efc2f09951ebd64da3a5560b8d6a1748c2b0888fcc1e81a239cc7