Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e22741e233321ee…

MALICIOUS

PDF

49.2 KB Created: 2020-08-15 08:31:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 919df4efccee52659f3dc6684ecc3f3a SHA-1: 9a834ba76cbf213bb06d4b9364f5b4e7359893f3 SHA-256: 4e22741e233321ee9c61a5a09687e94f845693687d88e2002bacc3f62f273841
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The document body, though heavily obfuscated, contains the malicious URL, indicating the intent is to lure the user to the redirector.

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/wb?keyword=general%20household%20survey%202019%20pdf
    • http://fokuj.yetiarts.org/uploads/1/3/0/7/130775403/wodosodoz-tevazowumajafa-leberik-wewilanoxib.pdf
    • http://files.collectiveunconsciousperformance.com/uploads/1/3/1/3/131381681/kefapakititof.pdf
    • http://files.depedmisor.net/uploads/1/3/1/3/131398526/fdd5a7bb3dcbfa2.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/9277292426.pdf
    • https://cdn.shopify.com/s/files/1/0433/9970/8821/files/gagivadagogadimopemusasa.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7624/files/69518408724.pdf
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/input_type_file_accept_application.pdf
    • https://cdn.shopify.com/s/files/1/0435/1705/1048/files/tonarerofasalavenudumavul.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/degejuwetisagemudow.pdf
    • https://cdn.shopify.com/s/files/1/0429/7110/3395/files/93198925705.pdf
    • https://cdn.shopify.com/s/files/1/0435/0646/6975/files/embryology_textbook_inderbir_singh.pdf
    • https://cdn.shopify.com/s/files/1/0431/8560/2721/files/lixonafawemupinezasamop.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_off00006a5d.bin
7da2a549f3d433e0d2ceee45acd7136837a6fd6a7e79432933b849d8d763b1e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5D 5804 bytes
font_01_sfnt_off00007e25.bin
2953c36a501c1c7fec8deb89094e5a0b1d428f013c29d76782e9a9d629e80cc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E25 10228 bytes
font_02_sfnt_off0000a156.bin
c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA156 16092 bytes

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