Malicious PDF — malware analysis report

Static analysis result for SHA-256 d41b05b04161e388…

MALICIOUS

PDF

47.0 KB Created: 2020-07-28 22:07:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf74d0eb4c4424a22588c8b0d9174314 SHA-1: d126e7aaad6cbc1e3470f0bb0fa8bc7a208bcbd1 SHA-256: d41b05b04161e388fbc208ac79d6684343e1df21f3f8153ff192829be89f5c57
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.cc'. Additionally, it exhibits a PDF link farm pattern, with numerous links pointing to Shopify-hosted PDFs, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=android+games+free+.+best In PDF document text
    • http://files.softutor.com/uploads/1/3/0/7/130776401/3510741.pdfIn PDF document text
    • http://files.klgdeehide.com/uploads/1/3/1/3/131398113/5766293.pdfIn PDF document text
    • http://files.dia-healthcare.com/uploads/1/3/1/1/131164531/zewepuzojipefu-tozejuwujeriwu-wufojete-guzonudazo.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/1/0432/6418/0390/files/dulenilinoporumetafevoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6570/3590/files/61983008901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0722/1658/files/dalunolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1126/5944/files/tibadibedoragi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/vufigabedof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/files/jusevidovajelunuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3098/4357/files/konisusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/zafezojareromagotomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4904/8474/files/40883943203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/faxopefogugede.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_off00007bc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC0 5144 bytes
SHA-256: 98fa28b1267e72892df601498feb1779cca4ba4cb4a65ddbc75d73feca56115c
font_01_sfnt_off00008d22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D22 9828 bytes
SHA-256: 35f2c8c350e5f7ece266b8aec29656c755e0ad8c5acc2480e5ff119bde82d2cd

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