Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0249fcc532ab409…

MALICIOUS

PDF

46.2 KB Created: 2020-08-04 10:33:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bad698d2b59055f53949aa2c41c87b5b SHA-1: 35750216f32e9ca2266c86d9b16a1cd910d7fa31 SHA-256: e0249fcc532ab409ae0a48a2b9c4a5149b5eb33967b41d035d417f337a189484
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm designed to artificially inflate search engine rankings. One prominent link, 'https://ttraff.ru/pify?keyword=articulations+in+music+pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to direct users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, but the PDF structure and embedded links strongly indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=articulations+in+music+pdf
    • http://files.marsal-solutions.com/uploads/1/3/0/7/130739169/pifom-vekafogi.pdf
    • http://files.bakmei-academy.com/uploads/1/3/1/8/131857199/welorosonav.pdf
    • http://files.familyallianceformentalhealth.com/uploads/1/3/1/3/131378932/xijukumepaxolesarobe.pdf
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/30398362564.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.pdf
    • https://cdn.shopify.com/s/files/1/0434/7743/4525/files/vebugiwimi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8507/9452/files/zapiwajobinulozimizatob.pdf
    • https://cdn.shopify.com/s/files/1/0435/4893/4295/files/jquery_get_date.pdf
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/rivavedurawetosevutorum.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/9738476631.pdf
    • https://cdn.shopify.com/s/files/1/0436/3524/5214/files/larivax.pdf
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/kujudubufowadurubixogijab.pdf
    • https://cdn.shopify.com/s/files/1/0434/7422/3269/files/xilutodumevikewagezep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdf
    • https://cdn.shopify.com/s/files/1/0440/9737/2312/files/nizafa.pdf
    • https://cdn.shopify.com/s/files/1/0438/8398/7096/files/fisulu.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/
    • https://cdn.shopify.com/s/files/1/04

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007679.bin
cd9c00f6276773227a6c52836063a71f96290438d423a5acdfff03d52544b72f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7679 5288 bytes
font_01_sfnt_off0000885e.bin
f3b5a0421ddd78cda5491ce642d0ee7a81a9e8a82a8ee369b16b029d7dfbdff5
pdf-font-stream PDF embedded font (sfnt) at offset 0x885E 10372 bytes