Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b3469a4835b3b0a…

MALICIOUS

PDF

83.6 KB Created: 2021-02-04 09:31:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a9cbbc4cbf2c51245dacf28fb3114126 SHA-1: 7f1d881690617d4ec01d8b5d76f92b88ab8064d8 SHA-256: 8b3469a4835b3b0a42388da679de7a7684819633aa9ed98e9619614345dcbb95
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/aws?utm_term=daily+devotional+guide+tagalog+version PDF link annotation
    • http://j3vnci4.xyz/dulikis9dxmt.pdfIn PDF document text
    • https://cdn.sqhk.co/kutogudofi/bkjjcWN/jelijoxedixiv.pdfIn PDF document text
    • https://cdn.sqhk.co/dezorevukor/lhehfib/homeschool_weekly_planner.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/jbjcgcQ/snake_simulator_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/tatiderubota/8cEjfhb/bipalafelunowopo.pdfIn PDF document text
    • https://cdn.sqhk.co/reretukida/TSWwumL/gedir.pdfIn PDF document text
    • https://cdn.sqhk.co/melivetipi/jjUYnWn/perfect_world_mobile_apk_vng.pdfIn PDF document text
    • https://cdn.sqhk.co/dezorevukor/BhamjcV/kovezodizuzotigazakizow.pdfIn PDF document text
    • http://adanakebap.org/50863085681r8rw2.pdfIn PDF document text
    • http://urro-hu.com/75701279985hsxdi.pdfIn PDF document text
    • http://feyakast.online/xopuzjby5z.pdfIn PDF document text
    • http://winoraama.website/dawaxejegebukegiganujominvqk3e.pdfIn PDF document text
    • http://feyakast.online/mine_lyrics_the_mayries7wwnt.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/viwoxuz/49893988300.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/empire_total_war_units_guide.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_off00010a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A51 5156 bytes
SHA-256: 137d23d03867130189394456e62a6759d66dd97d6e61b3aceffda3e7a186759e
font_01_sfnt_off00011bff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BFF 11152 bytes
SHA-256: b2b70ea44977abf0329764a4a259479632a906fdacb9b63418cf9cf0f6d9a68b