Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8be7d757b96abf6…

MALICIOUS

PDF

65.1 KB Created: 2020-12-11 10:48:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-06
MD5: 5711502406485135d0c163e906f07ca4 SHA-1: dfaae462e4dfc748ccf8f7a1410d6fc3a7abdece SHA-256: a8be7d757b96abf667ae38c29a5aa49de0d10c5bbda0f82daf5992fafdb80b0b
279 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://cctraff.ru/strik?utm_term=princes+of+the+universe+tab In PDF document text
    • https://s3.amazonaws.com/vavabi/amy_macdonald_album_free.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/jabivabitewokulevowozum.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/android_app_auto_screen_rotation.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/buzajolobapitana.pdfIn PDF document text
    • https://bunofavaluz.weebly.com/uploads/1/3/4/6/134661637/kazut.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/57031171459.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000bc08.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000bc08.bin)
    • https://uploads.strikinglycdn.com/files/efbacb55-c896-4b56-b15e-d04e6500c37b/samsung_youtube_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c106915-8bcd-4926-93bf-145afa9f8a05/janenezakasuvet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ee08a78-a41f-41a0-adf6-09adbdb64caa/61166083082.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b495ee7a-fc8c-4c62-ad05-91d41ec29d26/xudijixexovegutuzegex.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 extracted file (font_00_sfnt_off0000bc08.bin)

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC08 5140 bytes
SHA-256: 83c73626b7d69ea92e3cee24357f2ddd952300b8289c974c840917e16925c0b7
font_01_sfnt_off0000cd89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD89 13360 bytes
SHA-256: 1b92807eed4822509405cad7557364e759913c0dff6873435bcc324a5af7d1ca

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