Malicious PDF — malware analysis report

Static analysis result for SHA-256 82c445e5b88c3f31…

MALICIOUS

PDF

71.7 KB Created: 2021-02-12 19:38:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6942473190dd02014438751e06a1ac1d SHA-1: 34dc37bf119d4ce5002e4c6c2f6f8d61c22d96d0 SHA-256: 82c445e5b88c3f3146308da0380047556c0b3276e6876fa48fd23f036b07b22c
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/wix?keyword=strategic+relocation+pdf+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4411245/normal_5fc5be5a34faf.pdfIn PDF document text
    • https://cdn.sqhk.co/fabadipub/mCigVji/kart_racers_switch_game.pdfIn PDF document text
    • https://cdn.sqhk.co/porodiwaten/c8if4gj/class_9_maths_ncert_solutions_chapter_7._2.pdfIn PDF document text
    • https://cdn.sqhk.co/kaxejelun/hdyjgi6/39286774100.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460477/normal_60254c919a54c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461484/normal_5ff20315edcf6.pdfIn PDF document text
    • https://cdn.sqhk.co/ratevusur/TZrihBL/77325240333.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455377/normal_601d9a81b0c2d.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/c3hhujj/boxing_physics_2_hacked.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498978/normal_5fc7750149284.pdfIn PDF document text
    • https://cdn.sqhk.co/fexejikexew/YLshVgZ/4182654579.pdfIn PDF document text
    • https://cdn.sqhk.co/nenuguvan/gkgeBf4/octopus_garden_weaverville.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389080/normal_600b4727d0e2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447280/normal_5fe9c649e503b.pdfIn PDF document text
    • https://cdn.sqhk.co/nemovofa/hLhfifB/wozawurelasaka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368788/normal_6025d1bf0967f.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/vitelitubovuluj/47834613919.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/heartbeat_song_marcus_and_martinus.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/bsc_part_2_mathematics_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/alphabet_tracing_sheet_free_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/70922105846.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/39940166557.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/41447129754.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_off0000d962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD962 5340 bytes
SHA-256: e93149157cc3c29d6c154fe34e49f90d3c9e0ee2de012a598e12a7867d3e08f7
font_01_sfnt_off0000ebb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB1 11072 bytes
SHA-256: dee68d35ffba307d0700fc9ab6fe72fbbef02472210a526c9a919756f60f5262

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