Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8e96f06a7b82ff2…

MALICIOUS

PDF

51.0 KB Created: 2020-08-22 13:17:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 482d4f9718e46c730574fbda5749206c SHA-1: 786428b329ac94a1abf9f0d303388e5f34176f94 SHA-256: f8e96f06a7b82ff2401f7b96da59780097af44333deff613cf81b23c2c838816
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm, designed to redirect users to malicious sites. One critical heuristic flagged a direct link to a known malicious redirector, 'ttraff.cc', which is used in conjunction with keywords suggesting a lure for technical documents. The document body itself is heavily obfuscated but contains the same redirector URL and numerous other URLs hosted on cdn.shopify.com, likely part of the SEO link farm strategy. No scripts were extracted from this sample.

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=ansys+fluent+mesh+file+format In PDF document text
    • http://files.inspiringlibraries.com/uploads/1/3/1/4/131453111/5895370.pdfIn PDF document text
    • http://files.aliorientalrugs.com/uploads/1/3/1/8/131858975/mudufumuzovunu_tumakipin.pdfIn PDF document text
    • http://files.strive4business.co.uk/uploads/1/3/2/6/132695755/gawolizola.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/1/0433/9413/8277/files/xesegelojodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6775/8999/files/64104725125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2381/0203/files/anywhere_travel_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3964/2015/files/central_venous_catheter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/78011543036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8318/5832/files/82606648328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7542/6721/files/manual_de_antibiticos_antibacterianos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/simple_template_html_css_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3160/0031/files/snapchat_hack_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3206/7748/files/fine_dining_restaurant_business_plan_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6775/8999/files/66451021177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/fijodeririboba.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 4

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_off000083b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B7 5100 bytes
SHA-256: 000df70d76245890e7527b23e72e81ae3b880a0cb4de1df299acfed5e6203ad5
font_01_sfnt_off000094e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94E0 13036 bytes
SHA-256: dcac6163b01a25ade3cf6af9fc276c00c29505398380cb70d69b1c5db7d4667b

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