Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab698bbf9a82fe86…

MALICIOUS

PDF

65.3 KB Created: 2020-08-08 16:14:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d02e013fcefeccbae3eeb48091a3d02 SHA-1: fa04275a5b91fc1ea6b7512455e571a02bd41ee5 SHA-256: ab698bbf9a82fe86bd9e8e8b296b6e232757ddd691902dfc797073081f38a683
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=algebra+and+trigonometry+6th+edition+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. The presence of a PDF link farm heuristic further supports the malicious intent of distributing links through the document.

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.ru/pify?keyword=algebra+and+trigonometry+6th+edition+pdf
    • http://files.rapidibogainetreatment.com/uploads/1/3/0/8/130814515/41b21d.pdf
    • http://files.mrpultz.com/uploads/1/3/1/1/131163832/9669725.pdf
    • http://files.teastowels.com/uploads/1/3/0/7/130738771/271b9b9.pdf
    • http://files.wsuchisigmaalpha.com/uploads/1/3/0/7/130775373/vodelirotovoso.pdf
    • https://cdn.shopify.com/s/files/1/0438/4584/5152/files/28785465086.pdf
    • https://cdn.shopify.com/s/files/1/0429/2778/4099/files/bibuvusezozofow.pdf
    • https://cdn.shopify.com/s/files/1/0434/8480/7334/files/acdc_tnt_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0435/6803/8049/files/44736211808.pdf
    • https://cdn.shopify.com/s/files/1/0434/5479/1846/files/32912510598.pdf
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/substitution_and_ellipsis_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0439/4316/6107/files/64419895996.pdf
    • https://cdn.shopify.com/s/files/1/0429/7519/9391/files/34347203465.pdf
    • https://cdn.shopify.com/s/files/1/0432/3111/7467/files/aluminium_sheet_weight_per_square_metre.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/kesanajuridotokotixu.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/
    • https://cdn.shopify.com/s/files/1/0434/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b803.bin
74458be780ac9db01a3561781ce90df64bf8d28ed86bd811f6272654a0430f2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB803 5664 bytes
font_01_sfnt_off0000cb21.bin
ae08045208144f19bd49be38a3bf3784976a031c2b754255ae0510b7ddb37ee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB21 14176 bytes

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