Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cc06a33b49ef140…

MALICIOUS

PDF

40.8 KB Created: 2020-08-18 15:03:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6f5ee171770230c3c4de71e7b31566c SHA-1: eb61dc6d66abd0246e43fd60fe259683b8aee91e SHA-256: 4cc06a33b49ef1402b046c21fbc77cf06e557ac9ef72306ab693936ae210868d
150 Risk Score

Malware Insights

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

The PDF file contains a prominent link to a redirector URL, identified as malicious. This link, disguised within the document body, likely leads to a malicious site or download. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=ahora+j+balvin+song
    • http://files.mixmax.biz/uploads/1/3/2/7/132740482/gupixakesafoked.pdf
    • http://files.projectufo.org/uploads/1/3/0/7/130739381/4877757.pdf
    • https://cdn.shopify.com/s/files/1/0437/0209/1929/files/60612518623.pdf
    • https://cdn.shopify.com/s/files/1/0435/2914/2426/files/xesitorezonorezeruvubex.pdf
    • https://cdn.shopify.com/s/files/1/0434/8647/8489/files/modern_high_end_valve_amplifiers.pdf
    • https://cdn.shopify.com/s/files/1/0439/8995/8814/files/60787631748.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mojarugalemidim.pdf
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/98808567098.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/70021500180.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/77220204169.pdf
    • https://cdn.shopify.com/s/files/1/0439/8101/3150/files/sami_awad_aldeeb_abu_sahlieh.pdf
    • https://cdn.shopify.com/s/files/1/0431/4402/0125/files/ccna_full_course_file.pdf
    • https://cdn.shopify.com/s/files/1/0432/6853/8521/files/49665242831.pdf
    • https://cdn.shopify.com/s/files/1/0437/1575/6181/files/silent_hill_2_greatest_hits_iso.pdf
    • https://cdn.shopify.com/s/files/1/0440/2262/8502/files/dozusudezojofor.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_off000060cb.bin
2397c20f5b48d87414750f8bc90f92531d821f0c58da9fa060dcdd3d8f978e3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CB 5212 bytes
font_01_sfnt_off00007288.bin
ebb9f21d6449f8178202c46ea3db968d65bb550ce11268b062338ebb6ef816c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7288 10456 bytes

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