Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cf275c952a4fa4b…

MALICIOUS

PDF

39.1 KB Created: 2020-08-01 15:24:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9b0e265fa6c8d972720faf736473064 SHA-1: af5eeb5f5f6c169cb9998daf1634f326772db830 SHA-256: 7cf275c952a4fa4b423669d9a56b9d8bb706e5fcf564010dde77ac27f1bd1a06
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to drive traffic to the malicious redirector.

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=calculate+color+gradient+javascript In PDF document text
    • http://files.artsypartync.com/uploads/1/3/1/1/131164236/a64f0b42c30a94.pdfIn PDF document text
    • http://files.wonderlablearning.com/uploads/1/3/0/7/130776449/9285949.pdfIn PDF document text
    • http://files.cookedwithhart.com/uploads/1/3/0/9/130969889/lamorus.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/15900382268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4068/3685/files/kopajipekifuxoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/nosir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1442/2677/files/bonivisaladobimivawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6127/2995/files/22260788974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9481/7435/files/22032218108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27622062760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3547/4590/files/bakatirilelogiwofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/21538805425.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_off00004fdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FDB 5280 bytes
SHA-256: 759544a557dd6e31ccbb28dd2560c1dfe0a4586def57c3bec2d4015f8c937cf6
font_01_sfnt_off000061e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E9 14620 bytes
SHA-256: 74c746215324d7aa56aae55fa6a1116fb001f89626d05e1dc693aba91a21ea4a

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