Malicious PDF — malware analysis report

Static analysis result for SHA-256 636abddda8226803…

MALICIOUS

PDF

32.8 KB Created: 2020-08-02 02:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ec4826718bddcba07496171464fc810 SHA-1: 81aa56b3cd3206dc3465f0d1cd6d7acc3975ccd5 SHA-256: 636abddda82268035367ee98295678dc52ae9ac50567d744d91d687a76c4ce58
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically identified as a malicious redirector. The document body and embedded links suggest a lure for downloading a PDF, which is a common tactic for phishing or malware distribution. The presence of numerous external links, many pointing to Shopify domains, indicates a link farm designed to attract search engine traffic and potentially trick users into downloading malicious files.

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.cc/pify?keyword=entrepreneurial+finance+5th+edition+pdf In PDF document text
    • http://files.worldseatraveler.com/uploads/1/3/2/6/132681634/tomasikojufaduweso.pdfIn PDF document text
    • http://files.josephkimchiro.com/uploads/1/3/1/6/131606101/4894614.pdfIn PDF document text
    • http://files.pursuelifeinc.com/uploads/1/3/2/7/132740501/mujuvedepeximarudaz.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/1/0436/0749/0717/files/kanojuvozofajaxexaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fuwemosuwizukuxitakalav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2641/4748/files/wepubadodoromol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2889/8211/files/sites_that_use_http.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0454/9531/files/nonlinear_control_khalil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5392/2981/files/xijazumodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6408/2073/files/wasoweworites.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/lapexepedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/5826851046.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 5

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_off000043e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43E8 5144 bytes
SHA-256: 636efa5f64c5773b6f5a539a18626e755778a5e9c8e1b5690000389304400c6f
font_01_sfnt_off00005569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5569 9660 bytes
SHA-256: c54368fef65e4b666eca41c94369d8cbcc96d8c7eb293ccdfe2f7636c932b669

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