Malicious PDF — malware analysis report

Static analysis result for SHA-256 56960860128188f6…

MALICIOUS

PDF

41.3 KB Created: 2020-08-22 01:16:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00c83531176de87bace5ee368e1d5c1d SHA-1: b2342e330ff954252efe83d1cdf17c81028a04e3 SHA-256: 56960860128188f6c34ece4a13e80aa4f7bb44a75347f9faec05fa07513a4006
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is further supported by the presence of the URL in the document body. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify. The primary malicious URL, https://ttraff.cc/pify?keyword=free++games+battlefield+3+for+pc, is likely used to redirect users to a malicious site, disguised as a free game download.

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=free++games+battlefield+3+for+pc
    • http://files.chicagolandluxerentals.com/uploads/1/3/1/4/131437671/1543391.pdf
    • http://files.photographybysergina.com/uploads/1/3/1/4/131452735/bujopudade.pdf
    • http://xuvopifa.thehockeyprofessor.org/uploads/1/3/0/8/130874426/lijulamuzo_dakow.pdf
    • https://cdn.shopify.com/s/files/1/0435/3628/5860/files/bones_of_human_skeleton.pdf
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/26292100150.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/16239605751.pdf
    • https://cdn.shopify.com/s/files/1/0466/2856/9253/files/82362978691.pdf
    • https://cdn.shopify.com/s/files/1/0433/0605/7883/files/free_download_crossword_puzzles_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/5520/8858/files/degewamugirulepuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/67433691979.pdf
    • https://cdn.shopify.com/s/files/1/0430/9997/9930/files/xisedejup.pdf
    • https://cdn.shopify.com/s/files/1/0435/0250/2048/files/48869177701.pdf
    • https://cdn.shopify.com/s/files/1/0434/0862/1719/files/building_construction_report_file.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_off00006153.bin
8a331b6b98dce7be0b855516c91ec30d21051bc8a8e328e901978759a7c0fb0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6153 5736 bytes
font_01_sfnt_off000074be.bin
685ff83d3901e176aec169ecf1403da3e8a3b22a1224fa409ee9f7c101782857		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74BE 10472 bytes

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