Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5337c51f70c0184…

MALICIOUS

PDF

45.2 KB Created: 2020-08-15 08:24:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 244bfc269b96d0c935ce71c76a0c1828 SHA-1: c0790c6baaa3d53edc0585d2fdd6632c987017c9 SHA-256: d5337c51f70c01842b236a916c63825543eaaf2bf419af516f4e31582c35dc76
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is ttraff.com, which is likely used to funnel users to further malicious content. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs. The presence of a large number of external links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to distribute 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.com/pify?keyword=rustic+free+form+apple+tartlets In PDF document text
    • http://files.notein-between.com/uploads/1/3/1/1/131164121/fofofugojoluref_masuwojalakoj_nijujev.pdfIn PDF document text
    • http://files.bfpartyrentals.com/uploads/1/3/1/1/131164250/2570890.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/1/0430/8546/3713/files/78903115964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8962/9085/files/47047689763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5866669006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/64731852580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1437/9930/files/mupelorefozebawuraleg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7149/5574/files/iceland_travel_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/19983023963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/jiwogagoworazubinisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4192/9886/files/guide_to_federal_pharmacy_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4345/4102/files/mafepevusujaxir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/pdf_magazine_free_download.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_off000073f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F3 5168 bytes
SHA-256: 4c0f2091b10a4330cc4901b38967ef629a8ad0fb0b8ca562633723db16fb600b
font_01_sfnt_off0000856c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x856C 10152 bytes
SHA-256: e7fad6aadc0487827adeb912139a46fd2e297b1eac5486ace30bb43e38fe9ace

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