Malicious PDF — malware analysis report

Static analysis result for SHA-256 45c3b6a0b43974cb…

MALICIOUS

PDF

43.7 KB Created: 2020-08-22 22:28:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dbe33b3caeeef46785c0b51fa9e1e14 SHA-1: de831c7d6faae8d63643891a8f4fb06fbe02e023 SHA-256: 45c3b6a0b43974cb2eb3eff4474e8f776f1857b5a37a76c10aa544b32c324248
120 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, including a known malicious redirector at 'ttraff.ru'. The document body, though corrupted, suggests a lure related to a 'Biomerieux vitek 2 user manual'. The heuristic firings indicate the PDF is designed as a link farm, directing users to potentially malicious content. The primary attack pattern involves redirecting users to malicious sites, likely for phishing or further malware delivery.

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=biomerieux+vitek+2+user+manual
    • http://files.sunflowercottonwoodpto.com/uploads/1/3/0/7/130775598/2e3665e4.pdf
    • http://files.thecatandthecrystal.com/uploads/1/3/0/7/130775567/5fe9d5754a1074c.pdf
    • http://files.dassiedahan-author.com/uploads/1/3/1/4/131436971/wixodasa.pdf
    • http://kodojik.newbethelrolesville.com/uploads/1/3/1/6/131636655/kusixusotidu_zedezetinuvil_xezobunakiti.pdf
    • http://files.2die4gourmetsoups.ca/uploads/1/3/1/4/131453598/mobov.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/96002504800.pdf
    • https://cdn.shopify.com/s/files/1/0429/8765/1235/files/wevewoworebifinogas.pdf
    • https://cdn.shopify.com/s/files/1/0431/6993/9612/files/40217267126.pdf
    • https://cdn.shopify.com/s/files/1/0440/8256/1176/files/kexarumiweturakij.pdf
    • https://cdn.shopify.com/s/files/1/0429/3020/8924/files/18140903628.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1285/files/buck_converter_working.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8588/files/84621503083.pdf
    • https://cdn.shopify.com/s/files/1/0450/3588/0598/files/fajakidolemegizika.pdf
    • https://cdn.shopify.com/s/files/1/0433/4921/3349/files/present_perfect_simple_and_continuous_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/4717/4812/files/8456261904.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_off00006aa2.bin
8070cd9ab1b4234e60b98d4d33a0139764b666687aef402d1a294c31612c6ce6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA2 5204 bytes
font_01_sfnt_off00007c4b.bin
9a64786efcf47bedd1837822067f20d801a5fcbe8351532c45e423f47562b59c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4B 10608 bytes

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