Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4445c761e0745e9…

MALICIOUS

PDF

49.6 KB Created: 2020-08-24 23:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 123e2965d44cb369e18191fa00c8206c SHA-1: 0f5f7cb2b79f4b0d5c5bb5567f9ef41023115ea6 SHA-256: c4445c761e0745e9a2209a26fbc7e952e8b2e0be3be45c11fda30a3680763a22
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with the primary redirector identified as ttraff.com. This indicates a likely phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the presence of numerous SEO-optimized PDF links suggests an attempt to lure users to 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.com/pify?keyword=software+development+plan+template+pdf In PDF document text
    • http://files.snowyrangeleather.com/uploads/1/3/1/3/131379295/190643.pdfIn PDF document text
    • http://files.shoptaylorwick.com/uploads/1/3/1/4/131410662/dojitanokojeju.pdfIn PDF document text
    • http://files.csulbalpfa.org/uploads/1/3/2/6/132681772/187088.pdfIn PDF document text
    • http://files.mkaur.com/uploads/1/3/0/7/130738875/muzebijiriven-wojolud-purilafarufavul.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/1/0432/1617/5263/files/wexujaxudomasolin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39720928980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/fefesikasipirokaloluzegix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2316/3801/files/49450557517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7001/9998/files/dukemurig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3485/4051/files/matriz_swot_powerpoint.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8950/9017/files/25416837525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1994/4615/files/5496160873.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 2

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_off00008395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8395 5264 bytes
SHA-256: 5feb2800763a2a7222e4acac6032ec27c90ac7be0967254c64bf2f386a34b8f8
font_01_sfnt_off00009578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9578 10620 bytes
SHA-256: 7deccfe64067066a0fec7747dfb39f1e91eb97bfc20fc58fb1d9b00d5ebf2b76

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