Malicious PDF — malware analysis report

Static analysis result for SHA-256 950458da8dd4eb1c…

MALICIOUS

PDF

43.3 KB Created: 2020-08-13 01:08:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6529602ce9acc17ca1f6052c1cdb767f SHA-1: 63394002a3dfe6f3054cf45a6db680ecc70e63cd SHA-256: 950458da8dd4eb1c9233bfff69d2f6aa9d0f0810938bd4d7d18e76bcb15c251e
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.ru/pify?keyword=sepultura+arise+tab+pdf'. Another critical heuristic indicates a link farm structure, with many links pointing to Shopify domains, suggesting an attempt to obscure the malicious destination. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. The primary intent appears to be redirecting users to malicious infrastructure.

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=sepultura+arise+tab+pdf
    • http://files.tepeyacinstitute.com/uploads/1/3/2/6/132681443/zajiw.pdf
    • http://files.jannmorgancounsellingservices.com/uploads/1/3/0/8/130874457/3e3db360f.pdf
    • http://files.uofttalks.ca/uploads/1/3/0/9/130969334/d7bd5b5.pdf
    • http://files.grchips.com/uploads/1/3/0/7/130776607/susasisa_kemekasaxoxivim_totugaxas_kenar.pdf
    • https://cdn.shopi
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/3_stages_of_adulthood.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/potiwabuvufepatene.pdf
    • https://cdn.shopify.com/s/files/1/0428/1024/5286/files/kajipenumupuketokekuzel.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/20017445766.pdf
    • https://cdn.shopify.com/s/files/1/0440/6440/7702/files/malozaxi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/tulivazobedirusuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vojinanekarab.pdf
    • https://cdn.shopify.com/s/files/1/0434/4417/5013/files/13286757243.pdf
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/circle_of_fifths_piano.pdf
    • https://cdn.shopify.com/s/files/1/0429/0789/3919/files/33533420264.pdf
    • https://cdn.shopify.com/s/files/1/0431/4618/2822/files/20495401794.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/pefejidosanorali.pdf
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/58454911366.pdf
    • https://cdn.shopify.com/s/files/1/0437/9911/7986/files/46970082258.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_off00006baa.bin
82185f182e07ece1861fadb7cc838307144fc2c65de7627cd904541f46a9fec9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAA 5280 bytes
font_01_sfnt_off00007da3.bin
981174917bdea2aec1abed50de20dae3bc6d1f889958c480233d6fd5052bb1ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA3 10120 bytes