Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3b3987c55b967bb…

MALICIOUS

PDF

41.2 KB Created: 2020-08-22 15:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 928863addc9797f082191ee418394b55 SHA-1: 4ff6274bb1decdf129abf7d671db0845696117af SHA-256: c3b3987c55b967bb4de2254cf6888caab9cdd9310c3bed5ca5c3379afe456ba4
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=asvab+study+guide+book+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains text related to 'asvab study guide book free' and the malicious redirector URL, suggesting a lure to a phishing or malware distribution site.

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.ru/pify?keyword=asvab+study+guide+book+free
    • http://files.derbylineuu.org/uploads/1/3/1/3/131379406/2ff597c03.pdf
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/sekiro_holy_chapter_infested.pdf
    • https://cdn.shopify.com/s/files/1/0430/3532/8661/files/jutokapuxofeto.pdf
    • https://cdn.shopify.com/s/files/1/0428/8331/7926/files/angana_padharo_maharani_mp4_video.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/arbeitslosengeld_2_antrag.pdf
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/o_que_meio_ambiente.pdf
    • https://cdn.shopify.com/s/files/1/0432/9468/7400/files/desigualdad_mundial_branko_milanovic_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/2878/3002/files/teputejat.pdf
    • https://cdn.shopify.com/s/files/1/0434/2503/8498/files/rewakonazevo.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_off0000636c.bin
a4f1726b0deaa007fcbdc310110660d7b5dc5b698894f8501beb57e15e63d91d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x636C 5400 bytes
font_01_sfnt_off000075e1.bin
03a9b2785c88c7fbd6a680df573d629720f6c48f1fe18a6e81cfadb1099970c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E1 10128 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.