Malicious PDF — malware analysis report

Static analysis result for SHA-256 c14e74b26d63809d…

MALICIOUS

PDF

39.7 KB Created: 2020-08-23 12:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00391daf45a22bda0ba3a0e61fe0afcd SHA-1: 6c3d8fd0baca0661170b6c691840e9db54803051 SHA-256: c14e74b26d63809d0deac22065988f2227d78501db4692a6a0e24ebc328fa34e
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is ttraff.cc, which is used in conjunction with SEO poisoning tactics to lure users to potentially malicious content. While the document body contains garbled text, the presence of numerous links and the ML classifier's high confidence score strongly indicate a malicious intent, likely for phishing or malware distribution.

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=camouflage+bed+sheets+full+size
    • http://files.gisarug.nl/uploads/1/3/1/8/131871864/1152385.pdf
    • http://files.nigelbuxtonartist.com/uploads/1/3/1/0/131070161/gizupibipuma.pdf
    • http://files.halfmoonyogaandart.com/uploads/1/3/2/6/132695517/8318793.pdf
    • http://files.waveloopart.com/uploads/1/3/2/7/132740343/883d0.pdf
    • http://jogagumek.skilledpaint.com/uploads/1/3/1/0/131070894/jidebuzizeva.pdf
    • https://cdn.shopify.com/s/files/1/0435/0754/8326/files/alaipayuthey_bgm_theme_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/chicago_crime_data.pdf
    • https://cdn.shopify.com/s/files/1/0435/9369/5391/files/39648852360.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8333/files/21893709864.pdf
    • https://cdn.shopify.com/s/files/1/0433/0091/3310/files/zirag.pdf
    • https://cdn.shopify.com/s/files/1/0443/9290/6918/files/lamazasedezuvexikunovu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4149/6981/files/61911318991.pdf
    • https://cdn.shopify.com/s/files/1/0433/7506/7294/files/ruxagabesalozu.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_off00005cf3.bin
1c9dd41801a16749012fb5ccaf212ef74a4d65edcf234d696a3118ce4b889133		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF3 5320 bytes
font_01_sfnt_off00006ef8.bin
77deb15e303063d0520aa9b787c0428051e5d4d8d609f418ef75f2e388434c4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF8 10324 bytes

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