Malicious PDF — malware analysis report

Static analysis result for SHA-256 c19f75f03bd91e6d…

MALICIOUS

PDF

98.4 KB Created: 2020-08-15 02:42:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ea818ff263f28db585fba8aa65565da SHA-1: dc9479fc2f7815a8d3ebf6b6c2508b58a4a72a29 SHA-256: c19f75f03bd91e6d96989612db42c7bdec2b971b099cfba99e4710fe6b94778c
120 Risk Score

Malware Insights

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

The PDF document uses a deceptive title related to a Supreme Court judgment to entice users. It contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on Shopify. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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/wb?keyword=supreme%20court%20judgment%20on%20rafale%20deal%20pdf
    • http://files.benningtonyoga.com/uploads/1/3/1/1/131164442/7359335.pdf
    • http://pigif.circleoffriendssg.com/uploads/1/3/1/4/131452821/nemijosuxiw-kukezogadolazo-jomisomudisur.pdf
    • http://files.r3dband.com/uploads/1/3/1/4/131408439/nunapasegagaz-pavusorolu.pdf
    • https://cdn.shopify.com/s/files/1/0435/0545/1174/files/22030119917.pdf
    • https://cdn.shopify.com/s/files/1/0432/0247/8237/files/salesforce_attach_to_email_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8539/files/75079394266.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/bamolawiwonojagepa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/21059886668.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/41313507666.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gijamibumiji.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6679/files/piwekuwekixerunokik.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/59974224063.pdf
    • https://cdn.shopify.com/s/files/1/0434/2064/7576/files/30783685236.pdf
    • https://cdn.shopify.com/s/files/1/0431/6577/8076/files/super_mario_bros_3_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/91123312608.pdf
    • https://cdn.shopify.com/s/files/1/0436/1984/4258/files/zapexi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/danidafamomumawaliz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012e49.bin
5002d621b3d5b0ba000ad098fc9e0a88c79159c5c8f6f82fcc0f873c105d9fb8
pdf-font-stream PDF embedded font (sfnt) at offset 0x12E49 5476 bytes
font_01_sfnt_off000140db.bin
4a37030ffb7253bb41a12eb84cf62bd49ed7c126dd0d353a23b3bceeb41760a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x140DB 10900 bytes
font_02_sfnt_off0001662a.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6
pdf-font-stream PDF embedded font (sfnt) at offset 0x1662A 16164 bytes