Malicious PDF — malware analysis report

Static analysis result for SHA-256 b98ee4dee2c711a8…

MALICIOUS

PDF

51.6 KB Created: 2020-08-02 17:00:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a029b6dad9298892905151fd580dec4 SHA-1: 2d1afd6029497d45cca5beabad8831bdf77f7be7 SHA-256: b98ee4dee2c711a888b4c81e43feddb9c2ba730161ddf204029cbf80c727e2ef
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.ru/pify?keyword=android+version+9+easter+egg'. The document body, though heavily obfuscated, appears to contain this same URL. This suggests the primary purpose of the PDF is to redirect the user to a malicious site, likely for phishing or malware distribution.

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=android+version+9+easter+egg
    • http://files.rabbitmountainlavender.com/uploads/1/3/0/7/130738625/futevukumuj_lulamatix_libujuferebetux.pdf
    • http://files.eccpoplar.com/uploads/1/3/0/9/130968984/sotifuvi-fufuw.pdf
    • http://files.farmsteadproducts.com/uploads/1/3/1/4/131483097/rikukegigije.pdf
    • http://files.cahaasconsulting.com/uploads/1/3/1/4/131453252/3721885.pdf
    • https://cdn.shopify.com/s/files/1/0433/1801/8203/files/dodiwotarabalosixaxu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1087/5815/files/webogijupazitudofo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1913/1285/files/46378765112.pdf
    • https://cdn.shopify.com/s/files/1/0430/4902/5690/files/63326286628.pdf
    • https://cdn.shopify.com/s/files/1/0437/0006/0310/files/toginabaferem.pdf
    • https://cdn.shopify.com/s/files/1/0438/2156/4066/files/savajiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/siduxovi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/12753973489.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/86107391437.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_off00008c79.bin
f60259a8257b2d19214965dd0012d830b9d929195c444d869ec91a0e9b696812		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C79 5164 bytes
font_01_sfnt_off00009e1e.bin
4b52ee4d8601cc027c354c3f1c303e740bb5f26574478c62dc5a5e7b894170ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E1E 10388 bytes

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