Malicious PDF — malware analysis report

Static analysis result for SHA-256 c022ebab7e2c301d…

MALICIOUS

PDF

46.4 KB Created: 2020-08-21 03:12:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f3a52edfc19673bbc81e2c5dbb33824 SHA-1: 1c20fae0c58509383ed87060db9668295f1b6c87 SHA-256: c022ebab7e2c301df955e0b01613751a3ded5a0d337d5b5e9e68f59355de4738
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=dungeoneering+potions+guide', likely leads to a phishing or malware download site. The document also contains a large number of links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt to increase visibility. No scripts were extracted, but the presence of the malicious redirector is the primary indicator of compromise.

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=dungeoneering+potions+guide
    • http://xuvelozu.southcentralsetac.com/uploads/1/3/1/3/131384609/bf8daf789c448c.pdf
    • http://files.jkdesigncompany.com/uploads/1/3/1/8/131871657/gaviteduwibuvozuto.pdf
    • http://files.worldscreenculture.tv/uploads/1/3/1/1/131164048/497e88a9d670326.pdf
    • https://cdn.shopify.com/s/files/1/0434/1710/8642/files/basic_astronomy_facts.pdf
    • https://cdn.shopify.com/s/files/1/0437/7188/7767/files/big_data_analytics_course_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0432/2764/4072/files/83509266753.pdf
    • https://cdn.shopify.com/s/files/1/0428/8135/1839/files/xedaveka.pdf
    • https://cdn.shopify.com/s/files/1/0431/2304/8609/files/hollywood_movies_website_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/xisuvubolijonuxeziweze.pdf
    • https://cdn.shopify.com/s/files/1/0432/0608/2717/files/kokilaben_hospital_lab_reports.pdf
    • https://cdn.shopify.com/s/files/1/0435/3546/6655/files/gukevazenumotikuzoralo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/74067962396.pdf
    • https://cdn.shopify.com/s/files/1/0461/7548/6115/files/vudobugewuperojenilawob.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/whole_new_world_sheet_music.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_off00007004.bin
e38d2fe8b9f401f9559f231de8984442173cdcde214d8c3a058073a79386f76c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7004 4884 bytes
font_01_sfnt_off000080b3.bin
164ac18168b3e1c69388caa169bcd0947814f86219e0b8d57d17ee86824c534f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80B3 13984 bytes

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