Malicious PDF — malware analysis report

Static analysis result for SHA-256 f581fb87cf64db17…

MALICIOUS

PDF

39.0 KB Created: 2020-09-03 20:44:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68c9c41341f277b0b9e0114cedf845b8 SHA-1: d0d19b3fdcd1b8e6906da54ba554ddf4155ee0ac SHA-256: f581fb87cf64db17a76e8a0ff2616f4726bddbe63634add176d8eac457aca482
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a link farm of numerous PDF files hosted on Shopify, designed to appear legitimate. However, one of the embedded URLs, 'https://ttraff.me/wix?keyword=love+good+morning+photo', is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the document body was heavily obfuscated.

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.me/wix?keyword=love+good+morning+photo
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/28851780814.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/42027629114.pdf
    • https://cdn.shopify.com/s/files/1/0433/7149/5574/files/91769483242.pdf
    • https://cdn.shopify.com/s/files/1/0428/7394/6275/files/astm_b117_18.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/tuwixonobobegaziwen.pdf
    • https://static.usrfiles.com/ugd/b8c837_b320d072e39d4329a6c1eada0ae3a01d.pdf
    • https://static.usrfiles.com/ugd/c618e9_24717cb2c6134d33820cbce17ab6f0e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf72fc765e04470a8f2e65bb3ff3554b.pdf
    • https://static.usrfiles.com/ugd/b8c837_359302ef7ad94a2c92cf42d94a96c43f.pdf
    • https://static.usrfiles.com/ugd/dc98cc_21ac90a61c1e459fbc1e2a0718fa57d8.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/witanodigesiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/1448/7190/files/80073962094.pdf
    • https://cdn.shopify.com/s/files/1/0447/4968/4885/files/41086870785.pdf
    • https://cdn.shopify.com/s/files/1/0434/1393/0142/files/bachna_ae_haseeno_full_songs_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0437/6877/4807/files/rijuwofamapijowububit.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/wamenaziluz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5553/8595/files/rexetewogiwuzixaxopabunoj.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_off00005c24.bin
01f879444444804cd638ac725835c8040ae046e67fb4f2b58e6b3608059170bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C24 4952 bytes
font_01_sfnt_off00006cdf.bin
579fb4a662d2e2aa6eb40fe74044a5e4776fe0bbb2b7f487313fa12c16fc5d6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDF 10192 bytes

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