Malicious PDF — malware analysis report

Static analysis result for SHA-256 faa4fa89be95c61a…

MALICIOUS

PDF

52.1 KB Created: 2020-07-29 01:26:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8f97d42f712c0e6485283b700e108e9 SHA-1: 5462c8aac495fea7370feb3994eedea36fa4d1ac SHA-256: faa4fa89be95c61a1b2f217eeefe841619c27d1af200d2a29436514df2797fb2
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 of which point to external PDF files hosted on Shopify. One critical heuristic firing indicates a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs. The primary attack pattern involves directing users to malicious sites via these links.

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=definition+of+local+economic+development+pdf In PDF document text
    • http://files.deafdefy.org/uploads/1/3/2/6/132681210/runugevuvug_fowoxozogi_buxalimef.pdfIn PDF document text
    • http://files.jeschulte.com/uploads/1/3/1/6/131607010/182465fccd.pdfIn PDF document text
    • http://files.callaneventplanner.com/uploads/1/3/1/3/131397996/difezimid-fivijefav-waxituson-xireb.pdfIn PDF document text
    • http://files.normansignsanddesigns.com/uploads/1/3/0/7/130775557/zenozug_xurulaxibuwez.pdfIn PDF document text
    • http://files.lynneeast.com/uploads/1/3/2/6/132681219/8721769.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/1/0429/9672/7957/files/mosubabodekurofopitavapap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/49384201904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9189/4176/files/vibetebemogazurinakoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/witagukinojalolarobagep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1007/1460/files/niduzudofonupuzadajuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9072/9377/files/29342354591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/lidadesofubufon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6533/6217/files/67199550557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2675/0362/files/61902169123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3862/files/33663760954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22650439267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2690/6264/files/57752333704.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 8

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_off00008ed7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED7 4876 bytes
SHA-256: b2b118120d7ead8c2d3353161b47c2a069a5c5d38c252b713e997277f0253942
font_01_sfnt_off00009f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F5E 10196 bytes
SHA-256: cc62e3a7522b862165878e6bcbac09bdf25b2e71e1e32d8c00283d61c7a95d49

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