Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a02252f6742367b…

MALICIOUS

PDF

44.1 KB Created: 2020-08-21 03:32:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65d9bbef1d6db0fe721dc8a903b2878d SHA-1: 74e27adc5feed85700a963f5e29806dd483091cf SHA-256: 2a02252f6742367bd2e779def56d2defc2d09f92dd43e82d510b193db4b9209f
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and a title related to 'non-exempt reportable fringe benefits', suggesting a social engineering lure. The PDF also contains a large number of external links, many hosted on Shopify, which is characteristic of SEO link farm abuse. No scripts were extracted from this sample.

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=non-+exempt+reportable+fringe+benefits
    • http://files.sentinel-air.com/uploads/1/3/1/4/131437378/kawogud.pdf
    • https://cdn.shopify.com/s/files/1/0432/0968/7208/files/jefoxazapoti.pdf
    • https://cdn.shopify.com/s/files/1/0434/0868/7269/files/69591182571.pdf
    • https://cdn.shopify.com/s/files/1/0435/3117/4043/files/anti-_hijacking_cbt_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/8434/1657/files/nafopur.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5322/files/79145014569.pdf
    • https://cdn.shopify.com/s/files/1/0448/2056/2077/files/epidemiologia_de_la_diabetes_mellitus_tipo_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/3103/5047/files/ielts_writing_task_1_map_vocabulary.pdf
    • https://cdn.shopify.com/s/files/1/0437/5383/2609/files/64836068392.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_off00006dcf.bin
6d38547a7fe016f0137fd2198ae1424045e8ba30676bc4631d23119775a6bbf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCF 5428 bytes
font_01_sfnt_off00008041.bin
f5a7a23a9fa68d73c744a205edc78f1a4073a1fe2b5f54f151aca516fa44ea5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8041 10536 bytes

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