Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffeffaf4d2a4edf5…

MALICIOUS

PDF

36.4 KB Created: 2020-07-25 13:33:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72cf86a12d28e760f7429a9c64d99d99 SHA-1: cfcdcee2577c33cef489575c3e900dd7df83203c SHA-256: ffeffaf4d2a4edf574e15e59a9f12db35141fde4ef93f37efb944dbbc05b8c19
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF link farm'. The primary link points to a known malicious redirector, 'ttraff.com', which is likely used to obscure the final malicious destination. The document body is heavily obfuscated and contains no readable text, suggesting its purpose is solely to host these malicious links.

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=baseball+magazine+cover+template+free
    • http://files.eguastella.com/uploads/1/3/1/8/131871690/4656610.pdf
    • http://files.cichlidsanctuarynewworldhybrids.com/uploads/1/3/0/9/130969403/kiparar_monoxewamuxe.pdf
    • http://files.basiliojewelry.com/uploads/1/3/0/7/130738628/20314.pdf
    • http://files.basiliojewelry.com/uploa
    • https://cdn.shopify.com/s/files/1/0430/9129/6413/files/sekefaxininajekutufedofif.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/tamajusofogukajibola.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/74471930172.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/31494945380.pdf
    • https://cdn.shopify.com/s/files/1/0431/2501/4685/files/8939288622.pdf
    • https://cdn.shopify.com/s/files/1/0431/5119/6315/files/rumuripidaxabonefekugun.pdf
    • https://cdn.shopify.com/s/files/1/0435/5630/7107/files/9136437648.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/53021360423.pdf
    • https://cdn.shopify.com/s/files/1/0432/9242/6405/files/47628156138.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7221/files/ziwetuvavarevunep.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/logesolupam.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0938/files/jasitesinoka.pdf
    • https://cdn.shopify.com/s/files/1/0437/2643/8550/files/fefanepilumeruvakajaf.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_off0000520c.bin
67a0c81ee39616d592ca6fff98493ad353b9f548938df4b85f6ec70dc131b1e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x520C 5424 bytes
font_01_sfnt_off00006468.bin
94f5fab3a56dd105fd12432e402c8d69079705df3b82906a74d46a859e700ff8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6468 9412 bytes

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