Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cd42c0d9e8e3e15…

MALICIOUS

PDF

39.4 KB Created: 2020-08-15 01:21:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6e9536678794a9b536505295575a61d2 SHA-1: 2085b7966f0803aebf391464b61fc8b42ce62d79 SHA-256: 7cd42c0d9e8e3e156ddadc1eb564d1e06f9966759ab243755a77dc04f8cb83ff
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 URL, masquerading as a free movie download. Heuristics indicate this is a malicious redirector and part of an SEO link farm. The ML classifier strongly supports the malicious verdict.

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=movie+taken+3+free In PDF document text
    • http://tudip.victoriouslivingbiblestudy.com/uploads/1/3/1/1/131164250/sotixizar.pdfIn PDF document text
    • http://files.diagnosingdifference.com/uploads/1/3/0/8/130874102/d9979361f66.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/1/0433/9220/4950/files/8491260574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/oxford_latin_course_book_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5755/9190/files/fagusomumojogilanogedogun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/78178278006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruwisosipopiwusanitilowaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bewasovenajuwawofitef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/lilaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5926/5188/files/anghami_plus_apk_3._5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3033/2070/files/65977264907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8475/9711/files/gajanagizu.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_off00005e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E95 4844 bytes
SHA-256: 588ae391ce888cad0be2ea640398927d241b98bb71527c64ff5f2a64746b29fa
font_01_sfnt_off00006f38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F38 9944 bytes
SHA-256: f602232fa4970a71d9ffc3d0345e1183ae4cbbb7cd60fbdc167582433d58fb67

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