Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5a39a0109896d76…

MALICIOUS

PDF

44.1 KB Created: 2020-08-24 13:33:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2d456390de96a4fce7b1c5804cb546c SHA-1: d60a79339dcf9be44d7a24846bcbcd4aa7aef448 SHA-256: e5a39a0109896d760ce2529718285bf1a34cb8a1924018f65a3ddf8cdaa1f858
142 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'ttraff.cc'. The document body and embedded links suggest a lure for a browser extension, likely to facilitate further malicious activity. The presence of a QR code lure heuristic also indicates a potential social engineering vector.

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=plugin+adblock+chrome+android
    • http://movajekej.avocadotoastfinance.com/uploads/1/3/0/9/130969204/vefil-loduw.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/salvation_army_carolers_favorites.pdf
    • https://cdn.shopify.com/s/files/1/0437/1375/7339/files/27910360553.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/negimokezowapu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/degilugasowuleworuneva.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/6031097160.pdf
    • https://cdn.shopify.com/s/files/1/0430/0596/8537/files/60811058898.pdf
    • https://cdn.shopify.com/s/files/1/0434/0423/0805/files/nelawo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7510/7992/files/a_practical_english_grammar_exercise_1.pdf
    • https://cdn.shopify.com/s/files/1/0439/3612/0990/files/slimming_world_free_foods_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/74623008438.pdf
    • https://cdn.shopify.com/s/files/1/0436/2380/9187/files/ikea_kitchen_cabinet_dimensions.pdf
    • https://cdn.shopify.com/s/files/1/0437/8905/8206/files/15556100747.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_off00006e94.bin
f019c97a15b548128c7c17f4e0d9e285bf94cb3d32af0802512f209678e47bee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E94 5380 bytes
font_01_sfnt_off000080a3.bin
46b7d024cd675bc3342f79a838dbba8fbed8c1321b0c5181b641d21ee63efe42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80A3 10380 bytes

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