Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c8cdd4547cd5c9d…

MALICIOUS

PDF

49.9 KB Created: 2020-08-26 14:56:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4bfa4f8e63ce5caa9d3f5d0dd8ce048 SHA-1: f31490b49762a30ebbe6fe9781c65d828bc2f9a4 SHA-256: 3c8cdd4547cd5c9d17cbfad339729e16db8a443d1d0375ec41df5b3d1a3b4859
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=war+thunder+american+planes, which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content. The presence of a large link farm and a malicious redirector strongly 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=war+thunder+american+planes
    • http://files.romainewashington.com/uploads/1/3/1/8/131857193/ropodefi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/75830687091.pdf
    • https://cdn.shopify.com/s/files/1/0447/8969/4630/files/characteristics_of_athenian_democracy.pdf
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/back_propagation_neural_network_algorithm.pdf
    • https://cdn.shopify.com/s/files/1/0428/7466/7164/files/52498766785.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/gufabe.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/dofelunuxiwe.pdf
    • https://cdn.shopify.com/s/files/1/0430/9244/3303/files/kabewejifefipowa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7012/8277/files/joxevaripuxekavive.pdf
    • https://cdn.shopify.com/s/files/1/0433/9027/1638/files/28629818751.pdf
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/beats_solo_3_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/2807/9004/files/new_trends_in_audiovisual_translation.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_off00006bcb.bin
0954aaa8119585d991fe32d3058c3e726759a6a8f88df9114218ce66aec56fea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCB 5096 bytes
font_01_sfnt_off00007ced.bin
e34d18269fbbe02fc23ed9006f797d5e8922d3a1a4af0bb22c482d5fe1f14312		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CED 15116 bytes
font_02_sfnt_off0000ab26.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB26 4324 bytes

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