Malicious PDF — malware analysis report

Static analysis result for SHA-256 977f495941acb8cc…

MALICIOUS

PDF

73.7 KB Created: 2021-02-09 06:21:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1729cb9d961b51ea7daa5497c4fd975c SHA-1: 6f34b1ebd2056735d52498029c6cb5bdf66b2076 SHA-256: 977f495941acb8cce5ebb172edc6f01091ed2969d3375738f2cc2f4e8a469733
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://leonvi.ru/aws?utm_term=diwali+greetings+templates PDF link annotation
    • https://cdn.sqhk.co/medujebukoma/yWieMhj/56901298464.pdfIn PDF document text
    • https://kisisixixugejo.weebly.com/uploads/1/3/0/9/130969502/d1f8c8321f8b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417403/normal_5ffa51016e870.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/ihicqgj/mukoguwatavegas.pdfIn PDF document text
    • https://cdn.sqhk.co/rilaraviror/Grjiwia/text_message_sound_not_working_on_iphone_x.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/OicTphb/reality_fighters_vita_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_5feaebf0ea54c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470968/normal_5ff3c0574040b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452863/normal_5fcc9a1cbb8d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386824/normal_5fdffa464e2b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418175/normal_5ffb17676341b.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/iSz7Rih/12782849788.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483591/normal_6008703266114.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/igimGhj/74229515445.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479921/normal_5fd2cbab58e61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381294/normal_5fd191505717a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383131/normal_5fcb142d876f4.pdfIn PDF document text
    • https://cdn.sqhk.co/tumupowe/nmhhjih/top_open_world_games_pc_2012.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_off0000e31e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE31E 5232 bytes
SHA-256: 1033f7e2b3532a27ae960b6bc144e17d5f7b62f44882ce5eeee9232ce88a33f5
font_01_sfnt_off0000f4f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F3 11432 bytes
SHA-256: 3e20f9bf7920cd95273a8b2904cac01a6379447ee3d1b7160d3616b897e5af9c