Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8f30067a7987394…

MALICIOUS

PDF

55.0 KB Created: 2020-07-30 23:45:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da0070d3af542313968b19c42830e763 SHA-1: cda881ac8d177b29427227bffacf453119e56995 SHA-256: f8f30067a79873943a5f6cf96b200d3bc84f039e2fac53092ab139494f0839e3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a significant number of external links, many pointing to Shopify domains, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDFs from web content, further supporting the link farm hypothesis.

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=character+defects+worksheet+pdf In PDF document text
    • http://files.linderdwyertherapy.com/uploads/1/3/0/8/130813630/fd057d833c3d9.pdfIn PDF document text
    • http://files.horizonhealingcenter.com/uploads/1/3/1/4/131438490/japobegefumuwag_bofuvapusaj_nazopuloliz_kowanalebe.pdfIn PDF document text
    • http://files.chelseaplumley.com/uploads/1/3/2/7/132740821/6505107.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/1/0432/7168/4252/files/xogamezojozomedamapubader.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8597/8013/files/tusavivuwanisuwibebelejek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87195604050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8155/5350/files/wikatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8660/0609/files/36845626687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18396470220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/kulifalametusizowavojos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3173/3159/files/81826032400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/bogekeriz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/52123399293.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 2

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_off00009776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9776 5024 bytes
SHA-256: cbb26edb3114aa2569af4bd1a1eb8f38e6f1aa1f56857bce861aa8cf26b3ae21
font_01_sfnt_off0000a8b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8B6 11192 bytes
SHA-256: 067170fdb15c96decc86bf4b545f42009d63f5d24f401c0a41fa9ecbfba9e9cc

Open this report in the interactive analyzer, or submit your own file for analysis.