Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf4727910e8c3907…

MALICIOUS

PDF

47.4 KB Created: 2020-08-23 05:14:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a23afedcb180dfa7a22c28a8ef24537d SHA-1: 722d4c502c2f303d0b7722eb78337f94305336dd SHA-256: bf4727910e8c3907015479926b81add97eb5e88dda671486039f23b7640f98c8
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=every+breath+you+take+piano+sheet', is designed to redirect users to malicious infrastructure. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, including one pointing to 'https://cdn.shopify.com/s/files/1/0433/1667/4713/files/bakurezeton.pdf'. The overall intent appears to be social engineering through a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=every+breath+you+take+piano+sheet
    • http://nenabexi.cravingscaterers.co.za/uploads/1/3/1/3/131383791/7e4c27602cf1c.pdf
    • http://litonedaw.maryleemusic.com/uploads/1/3/2/7/132740478/sajafeza.pdf
    • http://files.blatteislaw.com/uploads/1/3/0/9/130969391/4726719.pdf
    • http://dotake.visitdvcc.org/uploads/1/3/0/8/130814328/tomululopozi_wakakopedazo_punebag.pdf
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/bakurezeton.pdf
    • https://cdn.shopify.com/s/files/1/0433/4691/9579/files/2870577842.pdf
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/xcf_to_png.pdf
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/xijibunikavirix.pdf
    • https://cdn.shopify.com/s/files/1/0431/8176/8872/files/68964782355.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/kabilev.pdf
    • https://cdn.shopify.com/s/files/1/0435/9153/2699/files/bufujaxifanozefi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5820/0725/files/4112976447.pdf
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/86095622504.pdf
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/46242515254.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/le_libralisme_conomique.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81579197248.pdf
    • https://cdn.shopify.com/s/files/1/0433/2106/5640/files/2016_vw_passat_owners_manual.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_off00005fd6.bin
9fda56ac9a96fb0448dbbdda5d10ced4bb3f8e13b7f908a3c5b822fc66ec0987
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD6 5080 bytes
font_01_sfnt_off0000711a.bin
a5871761d076fefcec635cc1e752445b1ffc6f029faa024779597d69b618e99c
pdf-font-stream PDF embedded font (sfnt) at offset 0x711A 15024 bytes
font_02_sfnt_off0000a00e.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA00E 4324 bytes