Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6e1b7265a946f4c…

MALICIOUS

PDF

46.1 KB Created: 2020-08-24 19:56:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb206aad9769d995a52ccc27668417f2 SHA-1: 55ebee99132100cc3eb8eaa1e5f58d421d7fd106 SHA-256: a6e1b7265a946f4c23448a2d23d729de863d59c44217c7ee5a1e347545d52484
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in conjunction with a lure for a 'battlefield 4 pc trainer free'. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The primary malicious URL is 'https://ttraff.com/pify?keyword=battlefield+4+pc+trainer+free', which likely serves as the initial entry point for a phishing or malware distribution campaign.

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.com/pify?keyword=battlefield+4+pc+trainer+free
    • http://fovedazi.nauticalreplicas.com.au/uploads/1/3/1/0/131070847/7916862.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/76774281720.pdf
    • https://cdn.shopify.com/s/files/1/0431/8111/3506/files/coded_with_love.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7108/files/gedofufalikomiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5757/0207/files/loluwatujilalofebobesu.pdf
    • https://cdn.shopify.com/s/files/1/0440/3170/5238/files/54188232111.pdf
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/limunekufig.pdf
    • https://cdn.shopify.com/s/files/1/0436/5107/2153/files/work_excuse_letter.pdf
    • https://cdn.shopify.com/s/files/1/0437/1536/2984/files/broken_blade_of_heroes_vanilla.pdf
    • https://cdn.shopify.com/s/files/1/0431/8606/1463/files/new_para_1_bangla_quran_pronunciation_and_translation.pdf
    • https://cdn.shopify.com/s/files/1/0434/2857/7447/files/44421329984.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gegexovikorojirokelaxedu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0762/2817/files/48550238303.pdf
    • https://cdn.shopify.com/s/files/1/0436/9888/0680/files/tomas_rueda_azorin.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_off000076a3.bin
80c5230e3f002919f6a9a19f5c5bac11285e0b909c57b18d8e43039f8a0a72a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A3 5108 bytes
font_01_sfnt_off00008812.bin
1062778f8d18827d30ac4ea5582cfdc9948754a6621fcb4f76913ef7da636fd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8812 10512 bytes

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