Malicious PDF — malware analysis report

Static analysis result for SHA-256 b956bc878e9cb40f…

MALICIOUS

PDF

73.2 KB Created: 2020-08-23 04:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76d8a83c1c36b96f744ebf1947c5344a SHA-1: 636184a96a19e728ce905f96c1c5c3d938d83790 SHA-256: b956bc878e9cb40f797ba0db8643664d994f80516ebe528e921ce7da298351e5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=fresh+blueberries+nutritional+information', is designed to redirect users to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous external links, suggesting an attempt to manipulate search engine results or distribute traffic to various sites.

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=fresh+blueberries+nutritional+information
    • http://selad.streamteamsunited.org/uploads/1/3/2/7/132741334/jelodo.pdf
    • http://pivog.providencerescuemission.org/uploads/1/3/1/8/131871991/pixubipikoparigu.pdf
    • http://xatigo.stretchcouture.com/uploads/1/3/1/3/131380429/garavavi.pdf
    • http://momus.thecelebrationinstitute.org/uploads/1/3/0/8/130814328/limusunoxekuja.pdf
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/escape_room_game_answers_level_83.pdf
    • https://cdn.shopify.com/s/files/1/0435/1462/6202/files/boolean_expression_simplification.pdf
    • https://cdn.shopify.com/s/files/1/0431/2793/1034/files/27849520146.pdf
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/gikajubimizu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9465/3594/files/aix_basic_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/kobigobadujuwa.pdf
    • https://cdn.shopify.com/s/files/1/0437/0612/2393/files/best_time_blocking_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0429/5547/3059/files/26679983386.pdf
    • https://cdn.shopify.com/s/files/1/0432/2364/6365/files/64635008691.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_off0000d481.bin
c3221788447353a56558db5a71f52ece54c70253569ffbf496be0cc40ec5b322		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD481 4984 bytes
font_01_sfnt_off0000e53b.bin
b079d8a543217d24eb69b6d63abcaa8a836f59b1dd73d75cfa3db23901b97d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE53B 10580 bytes
font_02_sfnt_off00010923.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10923 4324 bytes

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