Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96597b79f64ab4c…

MALICIOUS

PDF

50.2 KB Created: 2020-08-23 01:59:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b35fbfdbf0c5da7b68cdb981275b0d8f SHA-1: 1dba3427c607113a7fda4ebd2aed45f7ec8a5349 SHA-256: d96597b79f64ab4c7973f1be44865b3f648ca1151bb68c2e7a1d855e0904d637
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains, likely for SEO manipulation to increase visibility. The ML classifier strongly supports the malicious verdict.

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=pediatric+hodgkin+lymphoma+treatment+guidelines In PDF document text
    • http://files.sailingforhome.com/uploads/1/3/1/3/131379719/kegume-debarupuw.pdfIn PDF document text
    • http://rikemu.palmettohighschoolalumniandfriends.org/uploads/1/3/1/1/131164250/1625912.pdfIn PDF document text
    • http://files.instantresultswithkate.com/uploads/1/3/1/4/131438538/lotexidesodupul-bawiluzov-samugurali.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/1/0437/1644/4315/files/25868443115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2717/6343/files/rewrite_exercises_b1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7954/8574/files/64127175429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/24266226862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8720/0418/files/74952262515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/90172805663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7895/9775/files/58243651268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1571/6516/files/zizafobekoxoziwidapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/30589657624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6764/5857/files/vokatuxom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/munef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7408/3233/files/kitani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7053/7374/files/wetowuremujixejajowigofux.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_off00008511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8511 5656 bytes
SHA-256: 2905de370063d2f692714311e372223b56083850693c9985100b8b7b05423ffd
font_01_sfnt_off00009821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9821 10208 bytes
SHA-256: 34e70f6612a3e3d98515054c331fbc65c2bfe9679111685a0efc2134a34f2664

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