Malicious PDF — malware analysis report

Static analysis result for SHA-256 33b9f895b1a1bde8…

MALICIOUS

PDF

36.1 KB Created: 2020-08-20 00:02:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58fcfe8a80372b728b12409dbdb8d990 SHA-1: 567e4f544ee306ff283776f372b48e0bbdf7b5d5 SHA-256: 33b9f895b1a1bde85ba572b67a9ee235a2d78def2152a9ecd3e311f293b4ece5
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=candy+blast+games+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body contains garbled text but includes the malicious URL, suggesting a lure to a scam or malware download site. No scripts were extracted, limiting the analysis of direct payload execution.

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=candy+blast+games+free
    • http://files.cariboucafe.com/uploads/1/3/0/7/130775959/ludezamizuzagazu.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0429/2512/9891/files/79557649604.pdf
    • https://cdn.shopify.com/s/files/1/0434/6681/7689/files/24602203118.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/12743677898.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7138/files/bapibakorarumuzajununa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/wipob.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/56528206995.pdf
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/2018_chevy_malibu_premier_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2231/files/53012814472.pdf
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/notepad_python_ide.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/aha_music_identifier.pdf
    • https://cdn.shopify.com/s/files/1/0437/7182/2232/files/audit_assistant_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/4914/6778/files/kptcl_syllabus_for_ae_civil_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/cetoacidosis_diabetica_y_estado_hiperosmolar_fisiopatologia.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/lofuvisagidoxizuju.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_off00005011.bin
96cbc0e3eced1c0bb4abdb579886fb92da6a23abde72c63305bd4ed409726632		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5011 5372 bytes
font_01_sfnt_off00006247.bin
c5822135d5a0838260830fa730dcec9c07bb8142c149777e51d40f45f197f20c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6247 9708 bytes

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