Malicious PDF — malware analysis report

Static analysis result for SHA-256 95882e98a4b32f25…

MALICIOUS

PDF

36.4 KB Created: 2020-08-06 19:21:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cb30024c199bc2328ec669a383d166b SHA-1: 8d8b3db0cc1794f0aabb12960fe14ad89e1b75b6 SHA-256: 95882e98a4b32f25f793ab5021ba6bce61708fd68b2e08922f9d8177599b8757
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=converter+pdf+to+word+nitro+online', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to PDF conversion and the malicious URL, suggesting a social engineering lure to trick users into clicking the link. The presence of a malicious redirector indicates an attempt to lead the user to a malicious site.

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=converter+pdf+to+word+nitro+online
    • http://lebufan.earlgreen.net/uploads/1/3/1/6/131637136/3042357.pdf
    • http://files.afinoentertainment.com/uploads/1/3/0/7/130739916/jelavelukila.pdf
    • http://musije.seattleanesthesia.net/uploads/1/3/2/3/132302921/57e3cd52fe8.pdf
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/videkero.pdf
    • https://cdn.shopify.com/s/files/1/0432/2633/3351/files/romabarewirexifenal.pdf
    • https://cdn.shopify.com/s/files/1/0431/1603/6249/files/my_wifes_hot_friend.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kopamidije.pdf
    • https://cdn.shopify.com/s/files/1/0427/7754/2823/files/bumogeledudokufosis.pdf
    • https://cdn.shopify.com/s/files/1/0433/6248/4383/files/xexubovirajefidajuber.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/sabareguvitodovimewudej.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/lepometag.pdf
    • https://cdn.shopify.com/s/files/1/0437/2017/9864/files/89771445435.pdf
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/fetunobukato.pdf
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/59653083480.pdf
    • https://cdn.shopify.com/s/files/1/0434/0219/9196/files/inferno_dante_alighieri_italian.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kaxoku.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_off00005210.bin
ed0ac95d1666ba7058c297c8f22d587df107ce9dbbf54cf164235f6b60baa21d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5210 4704 bytes
font_01_sfnt_off00006236.bin
2703e7bdf7af888dddb7ca2ea9b9338148f09cf4ba5f3d651ff3d6ea8db3e7ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x6236 10160 bytes