Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ede0f9e6bfeee7f…

MALICIOUS

PDF

45.2 KB Created: 2020-08-01 19:20:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f00573981ccb9b313c6e884e39a65417 SHA-1: 20912deb5612925d8dd39dbdc1b6a30f67fe8766 SHA-256: 4ede0f9e6bfeee7f97977406bc72d89d2ad24c06bd75796d65b13750ef37bd8b
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This redirector is disguised as a search result for a textbook, likely to lure victims into clicking. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=psychology+myers+11th+edition+pdf In PDF document text
    • http://files.icemtn.com/uploads/1/3/0/9/130969428/gavobufixisikeja.pdfIn PDF document text
    • http://files.marinveloclub.org/uploads/1/3/1/4/131483009/tuvisav.pdfIn PDF document text
    • http://files.heller4selectman.com/uploads/1/3/1/8/131857655/73043408269.pdfIn PDF document text
    • http://files.bellvillerent-all.com/uploads/1/3/2/7/132740743/9014582.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/1/0429/5714/4230/files/96593598752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/jekod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3016/8230/files/77556923457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/bulomobaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0874/3835/files/mamujerefudokibetejikad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/zepisefaxekum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18842325712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3197/0471/files/95489935200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9384/3367/files/84857660043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5833/0786/files/lepagiponekevopelubuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7346/0641/files/78602509851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2756/1634/files/27167475356.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_off00007177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7177 5516 bytes
SHA-256: 4c8ca3c1b29fd35ace94a102095abe6525d4ae2b261bdce33d862be1e5f70c5c
font_01_sfnt_off00008423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8423 10572 bytes
SHA-256: 3285c55c92bd798ebad60a89fc0bb4c47051c74eb68f361f7cfe9e1ddca1bafd

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