Malicious PDF — malware analysis report

Static analysis result for SHA-256 d192d0c7f6422fec…

MALICIOUS

PDF

43.1 KB Created: 2020-08-26 18:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3e9c1ec66fa5bf71fbb9dbc93fee2ea SHA-1: f60d0aa78915bfffb8a6b3917d8ff5885ff21a2e SHA-256: d192d0c7f6422fecab761c968a9c8a7d6a9ad4cbe4910452324041dbcd9d302a
128 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic findings indicate a PDF link farm, suggesting the primary purpose is to distribute malicious links. The document body contains garbled text, but the presence of the malicious URL and the link farm heuristic strongly suggest a phishing or malware distribution attempt.

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=300mb+audio+dual+worldfree4ou
    • http://files.thamechoralsociety.org.uk/uploads/1/3/0/8/130813644/wulugu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2163/files/gears_of_war_ultimate_edition_unlockables.pdf
    • https://cdn.shopify.com/s/files/1/0436/1355/2802/files/certified_network_defender_study_gui.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1660/files/latojodagimasuzinujof.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/xutobawa.pdf
    • https://cdn.shopify.com/s/files/1/0436/6116/4697/files/biochemistry_4th_edition_donald_voet.pdf
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/pujemilunitapojuzedejabur.pdf
    • https://cdn.shopify.com/s/files/1/0438/8395/4328/files/mupadabuvexonavanagubov.pdf
    • https://cdn.shopify.com/s/files/1/0434/1402/8444/files/ready_player_one_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/2634/1272/files/11378072903.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/15074135258.pdf
    • https://cdn.shopify.com/s/files/1/0437/3384/4119/files/gemafewa.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_off00006938.bin
051ca4693db67091791d0a7582a63fa1ad07f2c0848abd262db7ca47e9d4dc63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6938 5408 bytes
font_01_sfnt_off00007b91.bin
f962ad66d973ecf89c5c6d03e0d32514e0a595f852dbb20fdc5376deac8161ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B91 10764 bytes

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