Malicious PDF — malware analysis report

Static analysis result for SHA-256 b649547c43546f0e…

MALICIOUS

PDF

42.8 KB Created: 2020-09-03 21:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c60e1bb6114e5567a3d41c7ba5af5119 SHA-1: 0fbafff1a09b17bb3001993fe9c496b41dc27d34 SHA-256: b649547c43546f0e78ebbcc81e5ffadac7ac79ca6b0b4cd9a85928d19162b98d
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, intended to lure users to a malicious site. The document body also contains numerous links to external PDFs, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is ttraff.club, which is flagged as a known malicious redirector.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.club/wix?keyword=teachers+guided+reading+planning+template
    • https://cdn.shopify.com/s/files/1/0431/0505/8976/files/toro_421_snowblower.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/ecological_footprint_case_study.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/8188897524.pdf
    • https://cdn.shopify.com/s/files/1/0436/9675/0746/files/calculus_3_final_exam_with_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0461/0818/0643/files/7th_grade_math_projects.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/tecnologa_blockchain.pdf
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/newspaper_jumble_puzzle_answers.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2b96ae9efea49cda02753a74a29d5b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_62609fc3d8e44fb5af0221e5eaf5e002.pdf
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/sazoj.pdf
    • https://cdn.shopify.com/s/files/1/0438/3503/1712/files/baazigar_film_song_pagalworld.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_off00006a9c.bin
bb22c6a38f7b8d17e17517822a4f6570ca350ccffecce79cef3be775e44d5170		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9C 5436 bytes
font_01_sfnt_off00007cec.bin
de305315a4266961dc10ffe888832797843447aef21e71f72cc5a267d71afa1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEC 9900 bytes

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