Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9bef8d3477fbb5a…

MALICIOUS

PDF

45.8 KB Created: 2020-08-20 13:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b3ec29c6c2421dd87373d5f1fc3ea2f SHA-1: 373ab6e7f5e7b56c654d2c21015b9b075e91b546 SHA-256: a9bef8d3477fbb5a8c27405bf6674e7d08f872afdb298f64e241f336767ce44a
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious URL, disguised as a driver download. This is further supported by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics, indicating a deceptive lure. The embedded URL points to a redirector service that ultimately leads to a malicious destination.

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=canon+pixma+ip7220+driver
    • http://files.mepanero.com/uploads/1/3/1/4/131438899/464364.pdf
    • http://files.katalystmakeupandfx.com/uploads/1/3/1/1/131164519/dokabepufuxazarab.pdf
    • http://files.appliedmicronanolab.com/uploads/1/3/1/4/131411688/04d0cd9a.pdf
    • https://cdn.shopify.com/s/files/1/0434/5361/2182/files/rejozinipi.pdf
    • https://cdn.shopify.com/s/files/1/0445/4429/5076/files/acadios_historia.pdf
    • https://cdn.shopify.com/s/files/1/0431/2888/1313/files/deledaji.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/mmlp2_download_zip.pdf
    • https://cdn.shopify.com/s/files/1/0428/4055/5687/files/tuzotodegujokebevemu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/83457564286.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/zowanoleme.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/vogusopumozagunogej.pdf
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/46792251792.pdf
    • https://cdn.shopify.com/s/files/1/0432/7620/6238/files/66671871885.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_off00007474.bin
a877351605d15fabde6c06375619e020742da519749dac27b9086a8d3b7a01f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7474 5280 bytes
font_01_sfnt_off0000865f.bin
4a0cfae71cbb6563ca2ef9c2f0447816ed6bd0369a49fc3fb5bcd63fb8e079b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x865F 10500 bytes

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