Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe2c4a0aee80981d…

MALICIOUS

PDF

72.4 KB Created: 2021-02-28 02:04:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2ecbead8c4556485c495ba75f8279c7d SHA-1: eff34fcba1d8b914700ec999a74ea0d2ab8758cd SHA-256: fe2c4a0aee80981d735f6afa97f348e3bc1cd5938ae667152b5bb33e70a39729
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/award?keyword=scag+mower+36+inch PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383571/normal_603acc4194ac4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451929/normal_601de86e4e6fe.pdfIn PDF document text
    • https://wajovojov.weebly.com/uploads/1/3/4/6/134652085/3711790.pdfIn PDF document text
    • https://posolefuriw.weebly.com/uploads/1/3/4/3/134374222/voxoni.pdfIn PDF document text
    • http://rameautbxy.space/27838330023sk06b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366316/normal_5ffbd4c8b3a93.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495550/normal_5fc9be69e307b.pdfIn PDF document text
    • http://lnstagramverifiedbadge-media.com/galleria_borghese_guide0tsex.pdfIn PDF document text
    • https://nagiwudulowep.weebly.com/uploads/1/3/0/7/130775657/16d7ee2fa4132.pdfIn PDF document text
    • https://sukaxivex.weebly.com/uploads/1/3/4/8/134895869/8050284.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/ziwuvijevo/call_of_duty_dolphin_emulator_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/fusiform_aneurysm_medical_term.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/bendy_and_the_ink_machine_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/zmodo_zp_ibi15_w_factory_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/kawasaki_vulcan_1500_classic_fi_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/burrraahh_movies_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/starcraft_heat_press_company.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/angularjs_ecommerce_template_free_github.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_off0000dd3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3C 5516 bytes
SHA-256: 8a27eece0fc680738c785a11a20790cb6d1b74da33e37aeb213ce4085cd921cf
font_01_sfnt_off0000efe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE4 10796 bytes
SHA-256: e2b62dd58e3cd7ea5b389667ce2fe78b88d8b00e9c4c6cb17d1e8585ac1d38a7