Malicious PDF — malware analysis report

Static analysis result for SHA-256 d641cea50f572b98…

MALICIOUS

PDF

48.6 KB Created: 2020-08-04 23:16:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b3221423dd56898205b39fbf2912791 SHA-1: 09e6d70228a45d784517c9c95cc037890ff1f7b5 SHA-256: d641cea50f572b983b1a5ca3c9cfcec108a45efb3e5a14716a6e67aeda82c7dc
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects to 'ttraff.com', identified as malicious infrastructure. The document body, though heavily obfuscated, contains text related to an 'abstract reasoning aptitude test pdf' and a call-to-action phrase, suggesting a lure to download or view a document. The presence of a malicious redirector link and the SEO link farm technique indicate a campaign to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=abstract+reasoning+aptitude+test+pdf In PDF document text
    • http://terenaga.bluestarblingbyrhonda.com/uploads/1/3/1/4/131408100/kugidube-gesegupunawoli-kegadibuzizer-wedekop.pdfIn PDF document text
    • http://files.pbjprodj.com/uploads/1/3/0/7/130740213/1e43f731b.pdfIn PDF document text
    • http://files.worryknot.co.uk/uploads/1/3/2/3/132303023/duluge_midisezezanomu_lijetezob_ladevanemebe.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/1/0433/0687/7080/files/sagomowaroperovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5516/1252/files/kebozifonazixopow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2240/9125/files/nogujonopeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4741/files/fowesemaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/99875397625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/53478677183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/numumufamagonapefoxobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8839/6959/files/vadepezuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84407481133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0744/3103/files/34536544563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6234/5384/files/vewumofisosuseja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2258/9853/files/86831990340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/panezebafaburivotupete.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 3

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_off00007fe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE8 5420 bytes
SHA-256: 80640b7fce88273778dfc6a9e13a17536d28571de2b5e36d912ce4879e59e191
font_01_sfnt_off00009261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9261 10276 bytes
SHA-256: 0b0fccae65deead586608b0ebd3a8cddd895e2caf03ed21b9a1ecbbb7744ced4

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