Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cf3844b80598fe1…

MALICIOUS

PDF

43.7 KB Created: 2020-08-01 05:03:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 81ba77a699c0f39ec08f16c8d78f9ae4 SHA-1: 83361c0f6f190861f37cd8126c98602f0d3f3d53 SHA-256: 7cf3844b80598fe1a69614f4a182bc6552bb21cdd924d9090164991476121554
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify-hosted PDF links, suggesting a link farm or SEO poisoning tactic to lure victims. The ML classifier strongly indicates maliciousness, and the presence of redirector links points to a phishing or malware distribution attempt.

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=planescape+monstrous+compendium+pdf In PDF document text
    • http://files.guadalupeblinds.com/uploads/1/3/1/6/131606876/d4b464f718.pdfIn PDF document text
    • http://files.milmarianas.com/uploads/1/3/1/1/131164358/0ab3e5.pdfIn PDF document text
    • http://files.vnchha.com/uploads/1/3/1/3/131378950/8558967.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/1/0432/3019/9966/files/75565257125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5397/2630/files/69907217179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8229/3141/files/jojuvamevutawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1656/9500/files/80450050289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/zupobuvowifamenav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7007/0690/files/babefofewenetazuwepiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3725/9938/files/42452324916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1204107997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/87065969928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8014/5313/files/17999726076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9710/4288/files/wijumiramojobegador.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/79106069982.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 7

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_off000063fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FD 5300 bytes
SHA-256: 13cb6dbcacfbad69fd107fe068108b4f26903177f251b47233e879f7e1eda409
font_01_sfnt_off000075f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F1 13888 bytes
SHA-256: aa79138d1834a3c426487b030b37222fd149c595d60fbc684ea726fd84f44803

Open this report in the interactive analyzer, or submit your own file for analysis.