Malicious PDF — malware analysis report

Static analysis result for SHA-256 76850f5851869d81…

MALICIOUS

PDF

43.1 KB Created: 2020-08-05 15:29:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 307f9bd7793985cda0388e3bea29b209 SHA-1: 50ac394cd13a68d35089e3c9035868c9ba250f4e SHA-256: 76850f5851869d814cc905818295967c39fd5b89fac378cccf89d4108c48911a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com, which is flagged as a redirector for malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and appears to be a lure for a phishing or scam campaign. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm used to obscure the malicious destination.

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=cateterismo+venoso+umbilical+pdf In PDF document text
    • http://files.brookrayart.com/uploads/1/3/0/7/130739704/4776625.pdfIn PDF document text
    • http://files.nativetales.com/uploads/1/3/0/7/130775942/b90bae542e.pdfIn PDF document text
    • http://files.chaseaviation.com/uploads/1/3/1/4/131453144/5744600.pdfIn PDF document text
    • http://files.roryfitzgeraldbledsoe.com/uploads/1/3/1/0/131070113/sajirezolisuwagekesa.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/1/0433/6667/8686/files/76376080438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5656/1318/files/67224258679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/vinivovojovala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/devirununilaniwetebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6032/8608/files/79571590633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0653/3525/files/sedenusifipezojemozipatun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/mokexizenonudupejulixitaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/vumufaduwurapefozofarit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8757/5705/files/danoravise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/nihon_shoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5064/7204/files/74109282723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6673/7311/files/80453116644.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_off00006a27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A27 5408 bytes
SHA-256: b3a1ac85cd1937f26e68837b96604cd9e707444c5b4523daafadd45ac433532c
font_01_sfnt_off00007c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C71 10376 bytes
SHA-256: c95406ec2e75b2747f3e98b864f114186b325a264ee39f885759a8dc064af846

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