Malicious PDF — malware analysis report

Static analysis result for SHA-256 280e2b9e78f68d82…

MALICIOUS

PDF

34.9 KB Created: 2020-08-20 21:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1cc4faf6542f9679017dbdf99804cc2 SHA-1: 29b9f73355b02f0d35039ce84e8f0b126dbddc41 SHA-256: 280e2b9e78f68d8282f9541ca5c9eea1d68ba00c4ed4b5823c9c363da2df1f8a
128 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is likely used to deliver further malicious content. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, some hosted on Shopify. The presence of urgency lures in the document body further supports the malicious intent of directing users to potentially harmful sites. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=codashop+free+fire
    • http://files.paulnoordhof.com/uploads/1/3/2/7/132712315/6455214.pdf
    • http://vujawibe.literaturehouse910.com/uploads/1/3/2/3/132302720/8465376.pdf
    • http://files.twwrealestate.com/uploads/1/3/0/9/130969837/edc82cb.pdf
    • http://likip.wainfleetskating.ca/uploads/1/3/1/4/131453133/1b45a64f.pdf
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/45697649112.pdf
    • https://cdn.shopify.com/s/files/1/0436/4868/0089/files/fedizoxiwumater.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/niwoponegasidutiwiba.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5468/files/boxipir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45397061855.pdf
    • https://cdn.shopify.com/s/files/1/0447/9077/5965/files/encclica_centesimus_annus_portugues.pdf
    • https://cdn.shopify.com/s/files/1/0432/8692/1382/files/kolefibiwizomeke.pdf
    • https://cdn.shopify.com/s/files/1/0430/6065/8330/files/nidujozelukuvazuse.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.pdf
    • https://cdn.shopify.com/s/files/1/0428/8364/5599/files/38215968401.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/biotechnology_class_12_notes.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_off00004bb6.bin
374d3b2d6f7726fd2e8c61757d5b84fb49c1ae37f3796694b5ba9b5eeab55cff
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BB6 5004 bytes
font_01_sfnt_off00005cb7.bin
d090803c663754038496dd741f68a1e2010461187fe450100e06d674158fdee8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB7 10080 bytes