Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6b1fc7ea72c328…

MALICIOUS

PDF

37.8 KB Created: 2020-08-04 21:04:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 462371f2c91f1bc3ca8d04526b700fd2 SHA-1: 46a883135f7ea6f6125ef43645f3aa66d47816c3 SHA-256: 7e6b1fc7ea72c3288faf49c8616e49017c14878d59e349d3d8d756a1bde5063f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a malicious domain, disguised as a textbook download. The ML classifier strongly indicated maliciousness, and heuristics confirm the use of redirector links and a link farm to distribute further malicious content. No scripts were extracted, but the document body and embedded URLs clearly indicate a phishing lure for malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ttraff.com/pify?keyword=vce+general+maths+textbook+pdf In PDF document text
    • http://files.worldheartsfairtrade.net/uploads/1/3/2/3/132303082/popabuwoxopev.pdfIn PDF document text
    • http://xivadef.lorneeckersley.com/uploads/1/3/0/8/130814124/kamupexel-vexexedizese-niwanakazoruwa.pdfIn PDF document text
    • http://files.denasheets.com/uploads/1/3/1/3/131379443/e2441bfde585bc.pdfIn PDF document text
    • http://files.susanbibulaphotography.com/uploads/1/3/1/3/131380612/poderuxogofizef_guludodet.pdfIn PDF document text
    • http://files.fathersweek.com/uploads/1/3/2/7/132710661/3128884.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4324/8545/files/jifuzoruniviwoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1379/9066/files/nuvezubupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0265/7957/files/53279885392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9632/4761/files/zerarenoguzigilofobubise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/32570896409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4919/7472/files/enter_the_gungeon_unfinished_gun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/48918729613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/22736120140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6386/8573/files/paretina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9966/1223/files/jisilozukabolobaziper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3869/3797/files/vufisidigimogikironi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8693/6219/files/whirlpool_dryer_manual.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

Related samples 7

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_off000054e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54E2 5808 bytes
SHA-256: ad641f4feae61c27f6575442affb391dccddeaa361c70cc6f3d995793984af7f
font_01_sfnt_off00006883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6883 9896 bytes
SHA-256: be38d32069ec4bf0e4992b85fb23e5a1d0698e49e59f97640a8f2e54cd069ae7

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