Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a2aadde908634ff…

MALICIOUS

PDF

61.9 KB Created: 2020-07-30 17:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d569ec23b2749562a54762efe4577363 SHA-1: 2f337d1910dc7708d40085d7ce8bee92f7be5d5b SHA-256: 4a2aadde908634ff29fb5d170c3bf9c1d20790d6af90bee4a87a6a6f89549b72
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links directs to a known malicious redirector at ttraff.ru. The document body contains garbled text, suggesting it is not intended for human consumption but rather to host these links. The presence of a malicious redirector and a link farm indicates an attempt to obscure the final destination and potentially distribute malware or conduct phishing. No scripts were extracted from this sample.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=suture+and+surgical+hemostasis+a+pocket+guide+pdf
    • http://files.stcolmcillesjns.com/uploads/1/3/1/4/131437725/fakewuwud.pdf
    • http://files.asteroidea.ch/uploads/1/3/0/7/130776536/wanifexikomo.pdf
    • http://files.azqualityremodeling.com/uploads/1/3/1/3/131398362/vedefovepofase.pdf
    • http://files.tameraboundsforcitycouncil.com/uploads/1/3/1/4/131438177/ratodatali.pdf
    • http://files.ellenmulholland.com/uploads/1/3/0/7/130776368/foneraduj-bejemafadej-gimafilaxevis-gogupo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/pawenitep.pdf
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/lewagaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/7523/2153/files/pubudixija.pdf
    • https://cdn.shopify.com/s/files/1/0434/6232/8472/files/94699364314.pdf
    • https://cdn.shopify.com/s/files/1/0433/9764/4449/files/rolamar.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/85913762844.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/norojakibi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3971/1655/files/28848190906.pdf
    • https://cdn.shopify.com/s/files/1/0433/5599/6328/files/14913965191.pdf
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/91959619563.pdf
    • https://cdn.shopify.com/s/files/1/0431/4945/9605/files/27292158919.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_off0000b406.bin
b2ab8e4ba6bace3c9f635a71f39648bbcaabb27a76794f4a317800de4a62daf2
pdf-font-stream PDF embedded font (sfnt) at offset 0xB406 5616 bytes
font_01_sfnt_off0000c6e7.bin
e63140458b34399c25f99453e98353fb3f48698dd2516ebbe7055169e66d732e
pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E7 10180 bytes