Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9ed81c98bbb65be…

MALICIOUS

PDF

45.2 KB Created: 2020-08-18 13:47:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5451b96a11decd34e843a484ab2cb74d SHA-1: 0937c176a601e72f173e8cca5fa881e31f078cb2 SHA-256: f9ed81c98bbb65be4b1e2253f9f6bcfc24ea6443babd020a3269ad82213a565b
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, directing users to 'https://ttraff.ru/pify?keyword=bse+star+mf+online+transaction+platform'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'cdn.shopify.com/s/files/1/0438/5269/3654/files/zivadifibeperoratifikak.pdf'. The document body, though heavily obfuscated, contains text related to 'Bse star mf online transaction platform', reinforcing the lure. The primary intent appears to be redirecting users to malicious infrastructure.

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=bse+star+mf+online+transaction+platform
    • http://xewapenel.prssasdsu.com/uploads/1/3/1/4/131407278/3010337.pdf
    • http://files.prayercloset.us/uploads/1/3/1/4/131437552/rusosaxedovoj_guxuveg_bugerelikul.pdf
    • https://cdn.shopify.com/s/files/1/0438/5269/3654/files/zivadifibeperoratifikak.pdf
    • https://cdn.shopify.com/s/files/1/0439/1269/1867/files/46947855508.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/92039155436.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1706/files/45806496724.pdf
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/the_history_of_computer_science.pdf
    • https://cdn.shopify.com/s/files/1/0435/4765/6343/files/14122888411.pdf
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/dajumesowajewuxoxizuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/4807/4396/files/alien_swarm_pc_game.pdf
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/python_password_generator.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7746/files/beachy_head_charlotte_smith.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_off00005e41.bin
441e397cf75af0ecfb6aeafd0b175655284509281b05c4ff746237a710d0959e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E41 5212 bytes
font_01_sfnt_off00006fe2.bin
675ed460d3d590b9cdbe2bf3af070b63e2e7ef43fdb0db3ca408a92e19420e41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE2 10080 bytes
font_02_sfnt_off0000929a.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x929A 16164 bytes

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