Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c39c4fa9e986dd4…

MALICIOUS

PDF

57.6 KB Created: 2020-08-14 07:57:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91f5b38ce58d59ff13d87572e498884f SHA-1: 56522d90ad4efc0f629f41cff84f5d51a7beba14 SHA-256: 4c39c4fa9e986dd4d432372964b87ae19d766f010cce707f4be8b2c64735e474
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wb?keyword=terminologi%20graf%20pdf'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The PDF also contains a large number of external links, characteristic of a link farm, further supporting the malicious redirection intent. No scripts were extracted from this sample.

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.com/wb?keyword=terminologi%20graf%20pdf
    • http://files.torontometabolicclinic.com/uploads/1/3/0/7/130738565/198c778.pdf
    • http://kemog.jessicabullick.com/uploads/1/3/1/4/131453247/rofobozo-fekewozopig-lapizemetiruzap-gexasud.pdf
    • http://files.stillmomentsbycarmen.com/uploads/1/3/1/4/131408103/xawiro_pubuwavabil.pdf
    • http://nitizigad.thefurniturelady.com/uploads/1/3/2/8/132814838/tojurisu-xemamugarolobo-kopuridu-taset.pdf
    • http://nitizigad.thefurniturelady.com/uploads/1/3/2/8/132814838/tojurisu-xe
    • https://cdn.shopify.com/s/files/1/0436/7260/0726/files/cs5_master_collection_serial_number.pdf
    • https://cdn.shopify.com/s/files/1/0428/4969/7959/files/103570120.pdf
    • https://cdn.shopify.com/s/files/1/0437/6746/4093/files/separador_de_paginas_online.pdf
    • https://cdn.shopify.com/s/files/1/0437/0667/9447/files/lilulepilurezobexogixim.pdf
    • https://cdn.shopify.com/s/files/1/0434/4669/8146/files/50729690095.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/wilexekarefezif.pdf
    • https://cdn.shopify.com/s/files/1/0439/1626/3592/files/62495451142.pdf
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/84230410766.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1637/files/architectural_drafting.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076b5.bin
5b73c0b12baab29fafd670e1e9a9b3cfc1c9710d739524fae5df7579526cc429		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76B5 2064 bytes
font_01_sfnt_off00008073.bin
70e4826c1864ffb9c80e2cf149da654f46186de28a292b418a97d5452da9896f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8073 4840 bytes
font_02_sfnt_off000090c0.bin
19fd462aa9b339ef104c8d76460059bf195b576bee4682b0625ac5b533890fb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90C0 10148 bytes
font_03_sfnt_off0000b3c2.bin
f3e85a79609410cadcb6a5dccc215ed088b6d7ea1b2e6e087c1abb4e508ed24d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3C2 16512 bytes
font_04_sfnt_off0000ca6b.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA6B 4324 bytes

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