Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab5fc5cd8b5872eb…

MALICIOUS

PDF

46.0 KB Created: 2020-08-23 10:44:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97f9da67580e43ce43042d5e454db72a SHA-1: d95dd74b79c7c9f1bc6ae212d457b3d13b38d836 SHA-256: ab5fc5cd8b5872eb77ebc8ad76522402200afb3974f36def6a41a1b5142ed685
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=salon+flyers+template+free, which likely leads to further malicious content. The document body, though heavily obfuscated, contains references to the flyer template lure and the malicious URL, reinforcing the social engineering 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=salon+flyers+template+free
    • http://files.ihmconferencecenter.com/uploads/1/3/0/7/130776493/8090370.pdf
    • http://files.fredpahlke.com/uploads/1/3/0/7/130775897/3729629.pdf
    • http://julab.newaygocd.org/uploads/1/3/2/3/132303382/4782023.pdf
    • http://wixofifok.bshpch.com/uploads/1/3/1/4/131452903/6899145.pdf
    • https://cdn.shopify.com/s/files/1/0435/3576/1567/files/74979842713.pdf
    • https://cdn.shopify.com/s/files/1/0430/9221/3911/files/diccionario_bblico_ilustrado_holman_revisado_y_aumentado.pdf
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/buxawetiwatulefuseboko.pdf
    • https://cdn.shopify.com/s/files/1/0435/8022/7747/files/48712566354.pdf
    • https://cdn.shopify.com/s/files/1/0437/9898/6909/files/kojemuv.pdf
    • https://cdn.shopify.com/s/files/1/0435/4503/4911/files/acoustic_analysis_of_speech_kent.pdf
    • https://cdn.shopify.com/s/files/1/0436/4946/6526/files/for_king_and_country_shoulders_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0430/7845/1349/files/struggle_song_r_nait_video_djpunjab.pdf
    • https://cdn.shopify.com/s/files/1/0440/5516/7126/files/advanced_excel.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/xezuzapo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/urinary_system_anatomy_questions_and_answers.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_off0000763d.bin
b6b5e18a02d04998b316af31c894f81ceb9ce648f5fb1460778bc4f47ca281d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x763D 5252 bytes
font_01_sfnt_off00008808.bin
dd9e4501a789f447182010c2c8ccce819562fb40ef2eb9a2be83622f297ab02f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8808 10400 bytes

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