Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddf0ab58d8f2a764…

MALICIOUS

PDF

72.9 KB Created: 2021-03-07 11:42:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c468ad9a8ed79a8e491bb70913f7ecdc SHA-1: 1cb6f3055dac2c36ac107d9e9f39b647ae629603 SHA-256: ddf0ab58d8f2a764e7fc4ef38599b8c85c14e274c306540b7a8c45b5f784fadd
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/award?keyword=finance+for+dummies+australia PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4444110/normal_5fee2f729707a.pdfIn PDF document text
    • https://tutemedoz.weebly.com/uploads/1/3/2/8/132814241/fidavasajajujawop.pdfIn PDF document text
    • http://itwomen.space/sample_letter_requesting_coroner_s_reporta1uxw.pdfIn PDF document text
    • https://wubenigulusetib.weebly.com/uploads/1/3/4/7/134712949/2e1a444feae6b7.pdfIn PDF document text
    • https://suwisabinupa.weebly.com/uploads/1/3/5/3/135351097/xuraxazezufevozo.pdfIn PDF document text
    • https://cdn.sqhk.co/bomagomax/ibDij3F/bubble_pirates_bubble_shooter_2.pdfIn PDF document text
    • https://cdn.sqhk.co/vapezuwe/hggiuic/43069519280.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471256/normal_5fc70f97e7df0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462982/normal_60345a482bb06.pdfIn PDF document text
    • http://zathkatow.xyz/51876989426mhwjl.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/gasodamuza/borderlands_pre_sequel_athena_build_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/bapebamirut.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/xevulupegajezumudu.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/upsc_ki_full_form_kya_hoti_hai.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/22199275215.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/28414174832.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_off0000e179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE179 5124 bytes
SHA-256: ee48d2807d9e799c903423d728b890e1113c12ba4f0b578473e47541c368235f
font_01_sfnt_off0000f2d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D2 10540 bytes
SHA-256: f391d4c1a0894d91cc1d6cc5a916b2839fd9b518f31e5776850d6c82f2bd26bc