Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9f2f28f2ca81e2e…

MALICIOUS

PDF

65.4 KB Created: 2020-08-09 09:30:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 37087a8550f4103914b9709f0fe1af17 SHA-1: 16aa14bc04bfcbbfffb917149b86320cc24fa3f4 SHA-256: a9f2f28f2ca81e2ec4df6120c4226735a642f1b479850b19f80633330fff5eef
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 'https://ttraff.cc/pify?keyword=cartoon+character+design+pdf'. This indicates the document's primary purpose is to redirect users to malicious sites. The presence of numerous other external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. 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.cc/pify?keyword=cartoon+character+design+pdf In PDF document text
    • http://files.athan.com/uploads/1/3/1/8/131871994/lumoxowor-fobiderutaj.pdfIn PDF document text
    • http://files.buttecollegebcea.org/uploads/1/3/0/7/130775607/fumisot_zawezuliladiwek.pdfIn PDF document text
    • http://files.sherwoodforestpreschool.com/uploads/1/3/1/4/131437984/6164470.pdfIn PDF document text
    • http://files.hetspul.nl/uploads/1/3/1/1/131163734/vabuk-fimowumojuvopug-lujezitaguvabes.pdfIn PDF document text
    • http://files.martienvanzuilen.com/uploads/1/3/1/4/131438453/vixowu.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/1/0427/6027/4087/files/58121268512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6677/8009/files/64959497782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6146/9599/files/nivifaman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/vixizipola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5858/4986/files/clear_discord_chat_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3203/4976/files/windows_driver_foundation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38746106010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/9238198408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1384/0794/files/81733925903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8347/2802/files/19958196206.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_off0000c33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC33A 5292 bytes
SHA-256: 01df129e5d32a8f1c1cfc31b5ef358c69b538c1181eb6ee780209ac96a94821e
font_01_sfnt_off0000d532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD532 10352 bytes
SHA-256: a0ed2984ba911116402ad06391bac55621798af2fd0f366de972c8a36de3b9c8

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