Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f6560c323ac400f…

MALICIOUS

PDF

45.2 KB Created: 2020-08-13 21:21:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9513548d74a906ce8ce7afa3eb12e095 SHA-1: 37111baed26410bdcc4810d8f654302934b0adc8 SHA-256: 7f6560c323ac400faa1dc6968b0dcd7601eab9f8e7b7a337937d27f0e05833e4
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its use of a link farm technique, embedding numerous external links. One prominent link, 'https://ttraff.ru/pify?keyword=armed+forces+pension+scheme+form+14', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'armed forces pension scheme form 14', suggesting a lure to trick users into clicking the malicious links.

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=armed+forces+pension+scheme+form+14
    • http://files.stanislavpocaji.com/uploads/1/3/0/9/130969652/5800543.pdf
    • http://luzalaz.maricelagutierrez.com/uploads/1/3/1/1/131164250/rutajazalumen.pdf
    • http://files.familybusinessatwork.com/uploads/1/3/1/4/131453645/3558453.pdf
    • http://luzalaz.maricelagutierrez.com/uploads/1/3/1/1/131164250/rutajazalumen
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/14034752677.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pufabupenidobuxix.pdf
    • https://cdn.shopify.com/s/files/1/0430/0505/1029/files/38447067405.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0917/files/9267123960.pdf
    • https://cdn.shopify.com/s/files/1/0431/5679/9647/files/zugufugetuwejuwojovegodez.pdf
    • https://cdn.shopify.com/s/files/1/0433/0654/9406/files/37671311021.pdf
    • https://cdn.shopify.com/s/files/1/0435/4736/1439/files/5_star_hotel_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/7928748388.pdf
    • https://cdn.shopify.com/s/files/1/0439/5152/1947/files/98678864630.pdf
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/mastering_the_art_of_french_cooking_en_espaol_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0437/7201/8845/files/14487521896.pdf
    • https://cdn.shopify.com/s/files/1/0428/4874/7676/files/63209056647.pdf
    • https://cdn.shopify.com/s/files/1/0429/1395/6007/files/thoracic_spine_stretches_and_exercises.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_off00007212.bin
d1196a263454a19298652871fc7d61758f15f97cee47424b7451dcb9efa8f82a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7212 5284 bytes
font_01_sfnt_off000083ea.bin
4491e15502209a971bff9ad78673ef0c932689566d4c121e317365d2de4af579		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83EA 10576 bytes

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