Malicious PDF — malware analysis report

Static analysis result for SHA-256 523ebdc59b352b82…

MALICIOUS

PDF

43.2 KB Created: 2020-08-23 13:49:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d2fb265903152190f9052b63e16273e SHA-1: e258585ce59977cdfa826b4ab9aa0950eebcc598 SHA-256: 523ebdc59b352b828632b83cc15fa01dac56edf9b5ca5c2a913dc5e8cdd4d179
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a malicious redirector, indicating a phishing or scam attempt. The primary lure appears to be related to a 'video editing app'. The embedded URL https://ttraff.com/pify?keyword=video+editing+app is flagged as a malicious redirector. The document also contains numerous links to PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for malicious content.

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=video+editing+app
    • http://files.blackskullcompany.com/uploads/1/3/2/6/132695531/vajufaxotoz-xilavu-sidoj.pdf
    • http://files.nanosystems1.com/uploads/1/3/0/7/130740391/9917680.pdf
    • https://cdn.shopify.com/s/files/1/0449/5494/3647/files/58319194451.pdf
    • https://cdn.shopify.com/s/files/1/0434/9535/8624/files/javafx_animation_timer.pdf
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/kerasabinopu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/guvaguzexonuteriruximade.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/megupekadekoxowazutitozu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7105/2703/files/bitevabuzezuzebe.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/rijejabiduvitozufam.pdf
    • https://cdn.shopify.com/s/files/1/0436/9901/1738/files/10164383306.pdf
    • https://cdn.shopify.com/s/files/1/0441/3816/8472/files/57231576669.pdf
    • https://cdn.shopify.com/s/files/1/0434/3873/5517/files/87989060286.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/76743793367.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/zibaretis.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_off00006d5f.bin
13f8c578ad25217729114a9bbd037d449989dd639711bd2857fcbe791f5e6725		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5F 4788 bytes
font_01_sfnt_off00007dc2.bin
584826670dff99202f7b4f8484808f50dfbbc3ab35b7bf8329edb45fe8db587b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC2 10004 bytes

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