Malicious PDF — malware analysis report

Static analysis result for SHA-256 337068c5d05cf8eb…

MALICIOUS

PDF

57.7 KB Created: 2020-08-05 05:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 901c29561adb7bd27a02a2646a1ae090 SHA-1: 3037d19584ba5dad3384484c6e99d6b60236214c SHA-256: 337068c5d05cf8eb00ca49156e2e7da5d9d64284eee9b31388e38569c5b28481
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including Shopify. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure via the URL 'https://ttraff.com/wb?keyword=radial%20distribution%20function%20pdf'. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites.

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/wb?keyword=radial%20distribution%20function%20pdf In PDF document text
    • http://files.jessiedallasdesigns.com/uploads/1/3/0/7/130739084/jawibim.pdfIn PDF document text
    • http://files.mendingspirits.org/uploads/1/3/1/4/131438682/gujuteri-lakafexituxo-norepo-dinimugirazed.pdfIn PDF document text
    • http://files.tasc-group.com/uploads/1/3/0/9/130969418/1500612.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/1/0437/6448/2202/files/vewenovavalisivupezos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1752/7715/files/wipulasowepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8434/1657/files/92178837802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7625/4873/files/97841072944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3384/4119/files/fidujudivofidamole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/mukevosegimudakes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/50662581381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9826/7029/files/osu_cookiezi_skins.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3028/files/penotu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0C 5296 bytes
SHA-256: 4577a90715c4852c8bfe0a831a770db66de36e3dd62abac28fe73e1e47b0f834
font_01_sfnt_off00009e20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E20 11208 bytes
SHA-256: 9cb4dc1c9fc7b320b3b470972b2000b5037acf1bc5bd0ce5173cdda8c50e7c82
font_02_sfnt_off0000c493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC493 16212 bytes
SHA-256: 16195100a68932d0a2e9255d62a9beddcf7c42b31d6bc52d73f11ef07aec883a

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