Malicious PDF — malware analysis report

Static analysis result for SHA-256 f70cc7670c072dc5…

MALICIOUS

PDF

42.5 KB Created: 2020-08-02 13:18:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 029f3b0d4c6ee1412bb9308c246d0e94 SHA-1: 3357c2a058985871b44e6cf359ed695d5480145b SHA-256: f70cc7670c072dc5473b82d4c81b10642122054813505901fb3ad28ebc78c820
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users into downloading further malicious content. The document body and embedded URLs suggest a phishing attempt disguised as a free PDF download. The presence of numerous external PDF links, many pointing to Shopify domains, indicates a link farm strategy to improve search engine ranking for malicious content.

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=visual+basic.+net+for+dummies+pdf In PDF document text
    • http://files.strongevan.com/uploads/1/3/2/3/132303035/686ea56009b3.pdfIn PDF document text
    • http://files.napavalleycoffinraces.com/uploads/1/3/1/3/131382274/vamupeleka.pdfIn PDF document text
    • http://files.grayslandhoa.com/uploads/1/3/2/3/132303238/03276.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/1/0440/5988/5733/files/jolakebaxabosukejefinor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6544/1430/files/gijugumukamuwekanogole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/27629269263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/gugakowolukejidobibad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2764/5084/files/85188821996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/16809798781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8765/files/wagokajubamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7912/2587/files/60848114835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/xutotewewema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/526428265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4060/4314/files/29682861271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/11237906747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6771/7270/files/c_byte_array.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 4

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_off000067e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67E6 5436 bytes
SHA-256: 77585e46dddae655a7b11bf4c4fb648eeb0615c9aeef5a9598138e3522b12619
font_01_sfnt_off00007a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A51 10192 bytes
SHA-256: 73081df4509a0e41a05a066b1719139aff41ef5c6169bf38e3a3466527d4ea73

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