Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf16a8e549e0a282…

MALICIOUS

PDF

50.2 KB Created: 2020-08-16 23:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be6337d80827c645ff71afdc234feffa SHA-1: cc06cb3b519b9feac65809b33ffa1815afb37c1f SHA-256: cf16a8e549e0a2821fc1d08462aea67e16c97d4076a7ce2b95d929034c31c737
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies a link to traff.com, a known redirector. The document body, though heavily obfuscated, contains the target URL and other Shopify links, suggesting a lure to download further content. No scripts were extracted, but the presence of multiple links points to a delivery mechanism for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=boolean+algebra+rules+and+theorems+pdf
    • http://bisoxo.kramersearch.com/uploads/1/3/1/4/131482975/zexasu.pdf
    • http://tiwubakil.throwercustomdesigns.com/uploads/1/3/2/6/132683136/jexom.pdf
    • http://files.dentalexplorations.org/uploads/1/3/0/7/130740563/6b17a84f2d96.pdf
    • http://files.swtradingcompany.com/uploads/1/3/2/7/132740836/4537823.pdf
    • https://cdn.shopify.com/s/files/1/0430/6049/4485/files/purobaruzurevesawasave.pdf
    • https://cdn.shopify.com/s/files/1/0436/0280/4898/files/xomuborezusugama.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/social_casework_a_problem_solving_process.pdf
    • https://cdn.shopify.com/s/files/1/0434/7366/6213/files/lulirozirejizunadujexaba.pdf
    • https://cdn.shopify.com/s/files/1/0435/4854/1079/files/nogavopabe.pdf
    • https://cdn.shopify.com/s/files/1/0433/4233/2057/files/technical_aptitude_questions_with_answers_for_computer_science.pdf
    • https://cdn.shopify.com/s/files/1/0431/8242/4215/files/4757399052.pdf
    • https://cdn.shopify.com/s/files/1/0451/0951/0297/files/rilisexa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/xukuwogigikox.pdf
    • https://cdn.shopify.com/s/files/1/0431/9808/7328/files/remobozevuwepufasezi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3725/3023/files/cie_a_level_economics_revision_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/7017/6932/files/classroom_cleaners_chart_template.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000084a3.bin
12572adf669d52a6fb1d0c8ae04cf8d9c94a5dc27496745c26c1ac3e23e1aedb
pdf-font-stream PDF embedded font (sfnt) at offset 0x84A3 5644 bytes
font_01_sfnt_off000097a1.bin
8b87f241e7fbc851537bdc21fc4ffcf9e371d7b46e133d5870a9696c375d1334
pdf-font-stream PDF embedded font (sfnt) at offset 0x97A1 11268 bytes