Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e85e353943f489…

MALICIOUS

PDF

36.0 KB Created: 2020-08-11 08:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03b4128b777448ac338f40465404b44e SHA-1: a7ed89f01c0263f09b631754c9aaf8cbac2fe95e SHA-256: e8e85e353943f489ebd4a0bb5b042965d83989648d887f4b2a0fb44dae5d8e88
150 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector service (ttraff.cc) which is flagged as malicious. The document body also contains numerous links to external PDFs hosted on various domains, suggesting a link farm or SEO poisoning tactic to lure victims. The primary malicious link is https://ttraff.cc/pify?keyword=aerothermodynamics+of+gas+turbine+and+rocket+propulsion+free+pdf, which likely leads to further malicious content.

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.cc/pify?keyword=aerothermodynamics+of+gas+turbine+and+rocket+propulsion+free+pdf
    • http://muzoruva.jovalynne.com/uploads/1/3/1/3/131383483/kuzoxinegefurazovi.pdf
    • http://kigadused.welcometomurphys.com/uploads/1/3/1/0/131070420/0826b9.pdf
    • http://files.ocalaqueenofpeace.com/uploads/1/3/1/4/131453429/kitoxabi-rubone-sutavajepaxiz-zugiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72163988246.pdf
    • https://cdn.shopify.com/s/files/1/0434/3011/7526/files/61157963169.pdf
    • https://cdn.shopify.com/s/files/1/0434/1625/6677/files/wosigupeluwun.pdf
    • https://cdn.shopify.com/s/files/1/0433/5524/2655/files/bujenikuni.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/xanegukuva.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/regezazukosuvegipozeko.pdf
    • https://cdn.shopify.com/s/files/1/0432/4756/7003/files/technical_director_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/vefifogagonixufegi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4630/4920/files/poxologoxomalinezujire.pdf
    • https://cdn.shopify.com/s/files/1/0432/0247/8237/files/toefl_examen.pdf
    • https://cdn.shopify.com/s/files/1/0428/4488/1062/files/tinkle_digest_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/namarudilewe.pdf
    • https://cdn.shopify.com/s/files/1/0433/5042/5753/files/cfit_alar.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_off00004bc7.bin
1673c8e39141504efbddc9833a0767fb5cb8f18c05b7deea5781dd31f56c5d76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BC7 5864 bytes
font_01_sfnt_off00005f9d.bin
a7d85c45b75c47e4a6fa275a1e77da9f8cf1c3fa8e9600796df5f186f012cb99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9D 10400 bytes

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