Malicious PDF — malware analysis report

Static analysis result for SHA-256 5104338c6ab90201…

MALICIOUS

PDF

52.7 KB Created: 2020-08-10 10:45:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9051d6eca69a9407d2dce52c79c26abd SHA-1: 3364da9e9fe516e14cb3211dda82b273a71f79bb SHA-256: 5104338c6ab902019439cbd26f8f17d00bc3971c28a2368266f90a5e521f03e7
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates an attempt to redirect the user to a malicious site. Additionally, a PDF link farm heuristic fired, suggesting the document is part of a larger SEO manipulation effort to distribute malicious links. The embedded URL in the document body, 'https://ttraff.com/pify?keyword=four+categories+of+application+software+pdf', directly supports this attack pattern.

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.com/pify?keyword=four+categories+of+application+software+pdf
    • http://files.dorchesterlions.com/uploads/1/3/0/8/130814785/badomirujobobazobuje.pdf
    • http://files.luxbiteonline.com/uploads/1/3/1/4/131437932/zuzowegu.pdf
    • http://files.perfectbreakcaravans.com/uploads/1/3/2/6/132681617/1422754.pdf
    • http://files.perfectbreakcaravans.com/uploads/
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/rixowimonurini.pdf
    • https://cdn.shopify.com/s/files/1/0433/8191/5802/files/how_to_install_games_cemu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3656/files/35268708877.pdf
    • https://cdn.shopify.com/s/files/1/0438/2133/4690/files/2465173904.pdf
    • https://cdn.shopify.com/s/files/1/0434/7094/6456/files/xozumiwunikamexofusofujex.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/belujujogifawo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2675/files/poe_maligaro_s_spike.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/grade_12_biology_textbook_ethiopia.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/5th_grade_daily_math_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/troy_bilt_tiller_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/9604/6752/files/lignocellulosic_biomass.pdf
    • https://cdn.shopify.com/s/files/1/0439/0843/2027/files/convert_to_word_online_gratuit_ocr.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_off00008f3b.bin
fff184ff564ec576a77a0283f26537806ea4c194f444f2763f5801179c7ae217		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3B 5372 bytes
font_01_sfnt_off0000a1a8.bin
5faf9d532595e5044280484fb9ebe13e5ba3b2d14af5d873eb390b19e7d99891		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1A8 10572 bytes

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