Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4dba1e078233713…

MALICIOUS

PDF

49.3 KB Created: 2020-08-25 16:14:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cf0f9ddbd4acca3e6eaa0cedd6d495f SHA-1: 2218b40cbda8c9415263fd6e8b6f78dabfe02894 SHA-256: f4dba1e078233713cdf159195a3f3ef80fc391ad646db886f1c942a53451620b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: User Execution

The PDF file contains a heuristic firing for a malicious redirector link, which points to a URL disguised as a driver download. The document body also contains this URL, along with numerous other links hosted on Shopify, likely to create a link farm for SEO poisoning. The primary malicious URL is ttraff.ru, which is flagged as a redirector.

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=behringer+u-+phoria+umc204hd+driver+free
    • http://files.lansingweddingdjs.com/uploads/1/3/2/6/132696598/4fa6dfad8.pdf
    • http://files.yauno.nl/uploads/1/3/1/8/131858540/xedaje_pemabejarilu_fimakatafomej.pdf
    • http://files.thealtgrp.co.uk/uploads/1/3/1/3/131384249/najako.pdf
    • http://bikiteb.twinsrun.com/uploads/1/3/1/4/131453645/lokoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/1283/3959/files/facebook_ads_training.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/knee_arthroscopy_rehab_protocol.pdf
    • https://cdn.shopify.com/s/files/1/0431/8098/2436/files/dmu_match_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/9845/5705/files/genetic_code_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0438/5089/1424/files/96114454732.pdf
    • https://cdn.shopify.com/s/files/1/0438/1786/1277/files/personal_cv_powerpoint_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1054/files/ximep.pdf
    • https://cdn.shopify.com/s/files/1/0463/5954/3969/files/swot_analysis_report_conclusion.pdf
    • https://cdn.shopify.com/s/files/1/0431/6610/5759/files/advantages_of_social_media_for_business.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3534/files/83918408745.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_off000080db.bin
377b2463248c1f5e9edae1319eb09c6deed1abf3f9f3d7d346cd349125dfc6c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80DB 5864 bytes
font_01_sfnt_off000094b6.bin
382d61c5040a9617d9dc3fcff622c050b42191c5ec725f99d121c82e7d8c406b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94B6 10480 bytes

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