Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b83b0e0780903ae…

MALICIOUS

PDF

39.8 KB Created: 2020-07-31 21:33:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a91ecf6094f4b520f44a12c53b586497 SHA-1: 3535c378f4ee6cc5333b52971ea4ad80f5e4abd7 SHA-256: 9b83b0e0780903aebb37f671a5f8baa4d41c1e9ee0e804adb92679010334f647
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised with a keyword suggesting a manual. The document body, though heavily obfuscated, contains this URL and numerous other links to PDF files hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content. The ML classifier also strongly indicated maliciousness.

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=viper+remote+start+manual In PDF document text
    • http://files.hammcrafted.com/uploads/1/3/0/9/130969175/906000.pdfIn PDF document text
    • http://files.fiftythreestarsandasun.com/uploads/1/3/2/8/132815752/lozozox.pdfIn PDF document text
    • http://files.nannypalooza.com/uploads/1/3/1/4/131437535/bunelekogosiz_zoredegalu.pdfIn PDF document text
    • http://files.outlawvegan.com/uploads/1/3/0/7/130739937/a8e2b830362bc4a.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/1/0430/5072/9634/files/97675896673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3100/2269/files/guxeruzezikapozivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5545/6164/files/mifekolekaxatepugif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/94694161770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0006/9287/files/3643654092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/vebig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/30532206635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4839/4143/files/79536397274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/jokunapukudoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7670/5692/files/35995377220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8307/9592/files/dudabomomofufalefebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0297/7700/files/zedaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5283/3687/files/kexeraba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/wetipoxukelidilag.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 6

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_off00005f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8C 4932 bytes
SHA-256: 146276f7124a601fabcec8cb72d59c4c9a411d31f50c70a3a08663776037b7f6
font_01_sfnt_off0000703b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x703B 10028 bytes
SHA-256: e44981b4dab3ae9f4fadfce42bbfeff7519790b352e7129fb81b2731aaa3cb50

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