Malicious PDF — malware analysis report

Static analysis result for SHA-256 36cf3ee146b93051…

MALICIOUS

PDF

35.2 KB Created: 2020-08-12 18:45:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4520983f9ac8ac51d933021e69a7ee5e SHA-1: 234444099d84a5578bfa1b32677d501aa0ab085f SHA-256: 36cf3ee146b93051f8d3448a78c383c082ecab013e58199a9e875e2dffdd3a7b
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=srimad+bhagavad+gita+in+bengali+pdf'. This URL is designed to redirect users to potentially harmful content. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains hosting PDF files. The primary intent appears to be directing users to malicious or deceptive content through these 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=srimad+bhagavad+gita+in+bengali+pdf
    • http://posit.planahenparty.com/uploads/1/3/1/3/131380213/dejetexenekuruxovimi.pdf
    • http://files.toysvideogames.com/uploads/1/3/1/4/131408942/mipozujenaxuro.pdf
    • http://kuxoduve.rbs919.com/uploads/1/3/0/9/130969352/molowirab_paralat_pisibukujejete_muvenela.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/47711538412.pdf
    • https://cdn.shopify.com/s/files/1/0440/8344/5925/files/bereavement_therapy.pdf
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/61255654579.pdf
    • https://cdn.shopify.com/s/files/1/0434/7602/5497/files/8901237461.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84302935330.pdf
    • https://cdn.shopify.com/s/files/1/0434/3712/9895/files/differential_equations_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/chemistry_molecular_approach_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/peter_atkins_physical_chemistry_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/2137/5387/files/mods_gta_4_xbox360.pdf
    • https://cdn.shopify.com/s/files/1/0435/8235/7663/files/fapoxivuke.pdf
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/bekowi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6332/9446/files/jidixolukuzodosozitozo.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_off000049bf.bin
0dc8fa62b4dedf45c9beb723000593d202dc128d478cd605d33abe36c573f843		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49BF 5580 bytes
font_01_sfnt_off00005c96.bin
bd1e27269f2e0d978bf9d8f336b0fda21fbdfb15fc0d07477360272335793d19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C96 10652 bytes

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