Malicious PDF — malware analysis report

Static analysis result for SHA-256 28f264971516354e…

MALICIOUS

PDF

60.2 KB Created: 2020-08-21 14:40:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 01ffe5e0d51638630e08faa5a7f4583e SHA-1: d5b04fbbd346ac3bf9065634c5bb00ca8fdc4693 SHA-256: 28f264971516354ea54b189deae4a6c7f47120c3f781f61373cad16ff6e82361
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination. The document body, though heavily obfuscated, contains the same URL and a blockchain-related keyword, suggesting a lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm used for SEO poisoning or to distribute malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=blockchain+platform+for+supply+chain In PDF document text
    • http://files.collinsvillecrimsoncadets.com/uploads/1/3/1/6/131607062/jepuxego.pdfIn PDF document text
    • http://dipegat.snaptoitstaging.com/uploads/1/3/1/1/131164066/9f5c29c34.pdfIn PDF document text
    • http://bopit.oceannotions.com/uploads/1/3/1/4/131453540/bc8e33ab446c25c.pdfIn PDF document text
    • http://files.alohawraps.co/uploads/1/3/1/1/131163920/9694081.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/1/0431/2721/0144/files/86351280553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/40417968525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0360/8216/files/working_memory_in_the_classroom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/76306847049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4899/2930/files/rasewizogumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2115/3957/files/kozek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9534/9666/files/water_id_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2665/3090/files/working_with_algebra_tiles.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 3

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_off0000ada9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADA9 5468 bytes
SHA-256: 2fb03a7975f6c9df3efe2f8fcc1b10cdfd6768b885dbf18588d3c1877df232a8
font_01_sfnt_off0000c010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC010 10500 bytes
SHA-256: d83a746ccebdc380ac6867142d1f523b40a85a3da1d9019c716d43f795618118

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