Malicious PDF — malware analysis report

Static analysis result for SHA-256 0871229df8dbefe0…

MALICIOUS

PDF

76.9 KB Created: 2021-02-03 17:03:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: afc1980779ad38abb0290ce9eda86fd6 SHA-1: 0629f4ed531e8400a158f600a3fb3cec95860267 SHA-256: 0871229df8dbefe08bec16311e428700907c09513a06370a21fc36e389b1e7e5
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/aws?utm_term=transformers+bumblebee+bike+16 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4422631/normal_60009fc19628f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459036/normal_5ff62f3c32593.pdfIn PDF document text
    • https://cdn.sqhk.co/punipopi/O3ijgiv/filter_sort_row.pdfIn PDF document text
    • https://cdn.sqhk.co/susojitigi/IhfhGgj/47959806956.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373998/normal_5fd905988c6a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373243/normal_5fe891ce05db8.pdfIn PDF document text
    • https://cdn.sqhk.co/vivepovugeli/hajhbpw/berserk_new_chapter_360_release_date.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416792/normal_6008769a8b0a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486563/normal_5fdfb79279bfd.pdfIn PDF document text
    • https://cdn.sqhk.co/lexoxuxoluvi/Lha8z15/26110681003.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/kibavutibeved/b_p_r_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/86446430740.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/titan_quest_haruspex_build_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/a_cry_for_help_song.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/voranexatisaru.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_off0000f086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF086 5272 bytes
SHA-256: 67274c6803f5992f158923e46f262f2bf5f93d193d1555a71fded68cf29b4787
font_01_sfnt_off00010262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10262 10676 bytes
SHA-256: f87913a9d03bbcec155f60ff1f7b39090015506097f4378d9e714d8764066d42