Malicious PDF — malware analysis report

Static analysis result for SHA-256 c94a63f1d0be08b3…

MALICIOUS

PDF

47.1 KB Created: 2020-07-28 08:13:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fdce78ed5cc62318dbba9c29c333a497 SHA-1: 7b217cb242c3ade3cfd8647e4c6c3cc62907c258 SHA-256: c94a63f1d0be08b388df3a06c768ee6998006e41548a48291a69316bdd4e5e58
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to obscure the final destination. The document body, though heavily obfuscated, contains text related to 'bulls and bears game free' and appears to be a lure. The presence of numerous external PDF links, many hosted on cdn.shopify.com, suggests a link farm intended to manipulate search engine results or distribute further malicious content. The ML classifier strongly indicates 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=bulls+and+bears+game+free In PDF document text
    • http://files.mrsanchezmusic.org/uploads/1/3/1/1/131164475/pojetawukiruma_lidabopu.pdfIn PDF document text
    • http://files.ccmplbca.com/uploads/1/3/2/6/132681145/b6ff53b236.pdfIn PDF document text
    • http://files.cyberzone.ca/uploads/1/3/1/4/131408432/lanazimosune-danejoxi-vunumilujugaxaf-fagop.pdfIn PDF document text
    • http://files.iwritebookspub.com/uploads/1/3/2/8/132815806/3148142.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/1/0432/8649/5396/files/robiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5420/2018/files/tanikosijebeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riwemabosemuridaredexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0383/8615/files/99219017591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6086/2874/files/98473450912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/josodogof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/65937150028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1376/6293/files/borivuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/16977098312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4854/1079/files/kutamofivuzetagus.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 8

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_off000078d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78D4 5060 bytes
SHA-256: 854d6485bc71dc3a63ac660d3ab7f66bf1dcadb6c655ce196c12e7943751e7e8
font_01_sfnt_off000089df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89DF 11052 bytes
SHA-256: 77f52e7eed71934aa977a74813d7bd6998bffd2252c7faf3c948737796318edb

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