Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa37f42e232a016…

MALICIOUS

PDF

41.7 KB Created: 2020-08-02 22:10:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ab17a0f87ade766400944d75fdc50a6 SHA-1: b0fd3c7d39ca16f6ea039980cbf9050e7795bfcf SHA-256: 7aa37f42e232a01636e07f7b43016d22b417817fbe723127c600108d1fd8589b
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=classic+car+vin+lookup'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The file also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or distributing malicious content. The primary malicious URL is the most critical IOC.

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=classic+car+vin+lookup
    • http://files.gpstrack.ie/uploads/1/3/0/9/130969818/silozomep.pdf
    • http://files.top-tungsten.com/uploads/1/3/1/1/131164446/vuvifukuvoveramataw.pdf
    • http://files.compusoftcanada.com/uploads/1/3/1/4/131452806/tojulo-buzepon-xametiwamimaxe-wepalokomim.pdf
    • http://files.jasminquill.com/uploads/1/3/1/4/131409597/375dd.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/go_launcher_ex._apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/6006/7480/files/tipegasojibujunifamoxate.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4640/files/72360263256.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/23585872247.pdf
    • https://cdn.shopify.com/s/files/1/0434/7179/8424/files/11138441493.pdf
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/13722220663.pdf
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/labikerimimopemut.pdf
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/7783129952.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/ant_downloader_for_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/52856007126.pdf
    • https://cdn.shopify.com/s/files/1/0432/3658/9730/files/49907464487.pdf
    • https://cdn.shopify.com/s/files/1/0434/3074/0135/files/domuliwe.pdf
    • https://cdn.shopify.com/s/files/1/0437/3345/0903/files/41004849507.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_off0000656e.bin
972ff1df791c3552dccc6cc4ecfe9f19c0a000832c1f92f43449bba810691c13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x656E 4956 bytes
font_01_sfnt_off0000765b.bin
bb438de3fb489d98bd3cb55becd63799b0f5d4c81f736500ef24965ac99a9ee3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x765B 10420 bytes

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