Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e59403507d1290f…

MALICIOUS

PDF

45.8 KB Created: 2020-08-22 06:39:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65e77035ba94400c47455b4a855f1cfe SHA-1: 4095e66cbc28e99584194ebf60fdb83922fbfaab SHA-256: 8e59403507d1290fde93ce2a6fb7465f579e02e36cfcc2c35bc9ccdb0458be9f
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. Another critical heuristic indicates a link farm, suggesting an attempt to artificially boost search engine rankings or distribute malicious content. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=android+one+x4+wiki', which is also flagged as malicious. The presence of numerous Shopify-hosted PDF links further supports the link farm detection.

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=android+one+x4+wiki
    • http://files.athleticspromotionltd.com/uploads/1/3/1/3/131381675/mumazudorumigu-tuzojudup-fapujifes-rabedep.pdf
    • http://zinuvizod.capefearorchid.org/uploads/1/3/1/4/131437119/bebepejijirope.pdf
    • http://files.maximiliangoetz.com/uploads/1/3/1/3/131380606/wogatotivokobe_bewukubi_bijejeb.pdf
    • http://nirufazib.marktobin.com/uploads/1/3/0/8/130814070/5565218.pdf
    • http://files.athleticspromotionltd.com/uploads/1/3/1/3/131381675/mumazudorumigu-tuzojudup-fapujifes-rabedep.p
    • https://cdn.shopify.com/s/files/1/0437/3820/2273/files/zukebukivogafisamirixojo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4508/4574/files/63225556566.pdf
    • https://cdn.shopify.com/s/files/1/0434/7707/4086/files/menaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/0062/6341/files/juleruti.pdf
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/55334406275.pdf
    • https://cdn.shopify.com/s/files/1/0435/4709/9287/files/57723939913.pdf
    • https://cdn.shopify.com/s/files/1/0433/6330/3575/files/65533733015.pdf
    • https://cdn.shopify.com/s/files/1/0440/7217/3733/files/annette_larkins_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0433/1982/0446/files/54889113053.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_off0000693d.bin
5cc27749f8486587efecf0cdaf045fe4dda3e96c2726f7ccd036f0bb997c9104
pdf-font-stream PDF embedded font (sfnt) at offset 0x693D 4408 bytes
font_01_sfnt_off00007842.bin
5232b051b00ea4de0530a6dc459212cb20cd52b5037241cc3d86672894b2137a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7842 10536 bytes
font_02_sfnt_off00009c3f.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C3F 4324 bytes