Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e4f6b665be6377…

MALICIOUS

PDF

38.6 KB Created: 2020-08-26 05:18:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b300b93e621c5310da3ae35f0d4533f4 SHA-1: 69e969a1aa75ef1e69abfd6330f0050f9289fed0 SHA-256: f6e4f6b665be6377dd937a6c1428c3c427386285e721b4a5cf39e9af5b9a0845
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is ttraff.cc, which is known for malicious redirection. The document body, though heavily obfuscated, contains references to the redirector URL and other PDF files hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted, but the presence of numerous malicious links indicates a phishing or malware distribution attempt.

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=fundamentos+em+gest%25C3%25A3o+de+projetos+marly+monteiro+download
    • http://files.richmondinfo.net/uploads/1/3/0/9/130968942/zulujeforel_dejadiwibezi.pdf
    • http://files.eugenehvac.com/uploads/1/3/0/9/130969037/refukakaru.pdf
    • http://files.theorchidblooms.com/uploads/1/3/1/3/131383892/e73bf.pdf
    • http://files.owlingdog.com/uploads/1/3/1/0/131070792/1837627.pdf
    • https://cdn.shopify.com/s/files/1/0431/6443/4583/files/shrimad_bhagwat_geeta_sanskrit_shlok.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5366/files/93258986278.pdf
    • https://cdn.shopify.com/s/files/1/0460/1371/0503/files/6028360997.pdf
    • https://cdn.shopify.com/s/files/1/0433/1254/5950/files/dodibenumixokufaxatug.pdf
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/asking_and_giving_directions_vocabulary.pdf
    • https://cdn.shopify.com/s/files/1/0438/7612/2792/files/ledevigepiki.pdf
    • https://cdn.shopify.com/s/files/1/0432/2230/2888/files/jexojiratuse.pdf
    • https://cdn.shopify.com/s/files/1/0432/1509/3917/files/71595037979.pdf
    • https://cdn.shopify.com/s/files/1/0434/3939/0872/files/budaya_jawa_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0431/4149/6981/files/who_do_you_love_yg.pdf
    • https://cdn.shopify.com/s/files/1/0427/9818/6663/files/ambedkar_jayanti_2018_photos.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_off00004d4d.bin
bb8266f121afbcbbe1aebad55ac8e5e04f48863825bdbaaf97b983c7b347ca29
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D4D 5824 bytes
font_01_sfnt_off00006088.bin
e022c53d0e8d55434e70043a877857cc42a67f19b32e0d082db9b29e95c30241
pdf-font-stream PDF embedded font (sfnt) at offset 0x6088 14192 bytes