Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b94bbd0ab51e3d9…

MALICIOUS

PDF

45.4 KB Created: 2020-08-03 17:22:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d0528e222c59e33bd08067fe07ceee1 SHA-1: b047b762b25525c593989b2739791aba3c1169a4 SHA-256: 1b94bbd0ab51e3d926ec72abb6103ce453f23ccf1f623bfd35e2924a72252b57
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com and other domains. One critical heuristic identified a link to a known malicious redirector at traff.ru. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=el+federalismo+mexicano+pdf, suggesting a lure to a malicious site. The presence of numerous links and the redirection to a known malicious domain indicate a phishing or malicious content delivery attempt.

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.ru/pify?keyword=el+federalismo+mexicano+pdf
    • http://files.valleyliberator.com/uploads/1/3/1/6/131606035/padavosagog.pdf
    • http://files.artbeatarttherapystudio.com/uploads/1/3/1/3/131398095/95d90.pdf
    • http://files.campladder.org/uploads/1/3/2/6/132695329/tuzafano.pdf
    • http://files.tnusd1812.com/uploads/1/3/1/3/131380467/890a0616.pdf
    • http://files.findest.eu/uploads/1/3/2/3/132303219/xubiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/0714/7162/files/dodokido.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/89056789984.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/74829704370.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91960476686.pdf
    • https://cdn.shopify.com/s/files/1/0432/9698/1147/files/10756943936.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/pevikoruwikise.pdf
    • https://cdn.shopify.com/s/files/1/0429/2945/5271/files/sesonunorizalekezejez.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/91692249544.pdf
    • https://cdn.shopify.com/s/files/1/0435/3032/2071/files/divadimiledaderer.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_off0000726b.bin
030ffae7a6773c938629608d2b5358f4a4c0bbedeff126eb0a5d4a0e651023d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x726B 5328 bytes
font_01_sfnt_off0000847a.bin
e2c4816352a9ec213abb1fe4af8f992827dfc28c7268e39fe49ab31ef135209b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x847A 10604 bytes

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