Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0af761f4eddca9f…

MALICIOUS

PDF

90.0 KB Created: 2020-07-29 11:39:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bbb9c31ab8179914880c435cc2cc2e18 SHA-1: b1dff5a31d57c15ee2c3c45b25ff47a9e0a027b3 SHA-256: f0af761f4eddca9f110a4ddb812d790112e8d927d742bad6ce2e1700636a96d4
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This indicates a link farm or SEO poisoning attack designed to drive traffic to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves redirecting users to potentially harmful content via these links.

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=serological+methods+for+viral+diagnosis+pdf In PDF document text
    • http://files.hypopara-awarenessday.com/uploads/1/3/0/7/130739782/jenujevugebaxemit.pdfIn PDF document text
    • http://files.almamusicandartsfest.org/uploads/1/3/1/0/131069789/710708.pdfIn PDF document text
    • http://files.mrssenasclass.com/uploads/1/3/1/4/131437601/gonomisixukuzexozi.pdfIn PDF document text
    • http://files.istolo.net/uploads/1/3/1/1/131163712/monunot-wosejavivasev-jubizosut.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/1/0439/4981/8024/files/zasutapawinuzukudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6502/4412/files/92644031808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8941/8657/files/77719888505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6167/3126/files/ponivififunudopulabupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/37913394756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7296/files/vumijumebefofegek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66916333827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2597/2904/files/22334282641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/vosakup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/61842547796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4962/2431/files/bamekonuburiralurap.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F13 5520 bytes
SHA-256: 1c0daa7e8bbc92c246722bfd96d99bb565ed2b0e9af90a8b7e18798e238b5241
font_01_sfnt_off000121ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121AC 10344 bytes
SHA-256: 801261ac96efb2acc1386e155da446a7ce69fb8e57ad14946cec613b73213023
font_02_sfnt_off00014500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14500 16148 bytes
SHA-256: 98bbda09e34957c2c47eea570891e411fa41ced272e9777bbef021ce7395b75a