Malicious PDF — malware analysis report

Static analysis result for SHA-256 b39a3958e8044f90…

MALICIOUS

PDF

44.9 KB Created: 2020-08-19 08:40:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff7a722616640a977302660975c6e128 SHA-1: 6969a2405862b81050c2a8e868a7529448cbd253 SHA-256: b39a3958e8044f90cae798fafcf73789377825e2ec0c630f19a3b94a69833140
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.ru, disguised as an 'epf withdrawal form 15g'. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files hosted on external domains. The primary intent appears to be directing users to malicious infrastructure through these deceptive 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=epf+withdrawal+form+15g
    • http://diduwon.silverdalevillagemarket.co.nz/uploads/1/3/1/3/131398404/tilajoxixejep.pdf
    • http://files.shragagafni.com/uploads/1/3/1/4/131413718/mujuxuxejetuju.pdf
    • http://files.naturallysport.net/uploads/1/3/1/1/131163738/7369754.pdf
    • http://vigidiw.londonstreetgallery.org/uploads/1/3/1/3/131398003/sorajibosabo-deriwenimaf-bexifesimi-zanalu.pdf
    • http://nejowef.murchiebhs.com/uploads/1/3/0/7/130740178/fabitikuwoxudub-zebazam-fuseza-moperodumaraj.pdf
    • https://cdn.shopify.com/s/files/1/0438/3614/5814/files/bapenekezipulejegag.pdf
    • https://cdn.shopify.com/s/files/1/0435/8144/0168/files/ice_sheet_calving_video.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/1322219195.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/bepekazazetesesejuvapejaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/1914/0253/files/ayushman_bharat_yojana_registration_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/bexano.pdf
    • https://cdn.shopify.com/s/files/1/0434/9332/7008/files/kekivobalakunovot.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rofimoluxita.pdf
    • https://cdn.shopify.com/s/files/1/0435/5037/6099/files/maladie_d_alzheimer_traitement.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/wumenuza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/velokiw.pdf
    • https://cdn.shopify.com/s/files/1/0439/3825/0910/files/minute_maid_seating_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006450.bin
f7fffe91631e442c854970e67c8051a06ff927778bf776ad15988d6a08ced6cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6450 5068 bytes
font_01_sfnt_off000075a2.bin
e9e0c35485cdb34a9ecacd6d7123a3fa74447eae1af4702ee9a73dd40b920b65
pdf-font-stream PDF embedded font (sfnt) at offset 0x75A2 10252 bytes
font_02_sfnt_off000098a6.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x98A6 4324 bytes