Malicious PDF — malware analysis report

Static analysis result for SHA-256 2563f88956745c40…

MALICIOUS

PDF

42.9 KB Created: 2020-07-27 22:37:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e81518ab1f5e9f514a3d02091e9c55c SHA-1: c2963dcdae789c166350f7e343c4d0d1715927b2 SHA-256: 2563f88956745c40db93043cce2d20b7bc52572381116d58e80d906a98292112
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is part of a link farm designed to host numerous PDFs. The document body, though heavily obfuscated, suggests a lure related to a 'hearthstone deck tracker arena helper', likely a pretext to encourage clicks. The presence of a visual download button further supports a malicious workflow aimed at tricking the user into downloading a payload.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=hearthstone+deck+tracker+arena+helper
    • http://files.triciavanoostveen.com/uploads/1/3/2/7/132740987/1454771.pdf
    • http://files.bsjmun.org/uploads/1/3/1/6/131606094/d927fc0d5.pdf
    • http://files.reddsocialstudies.com/uploads/1/3/1/4/131407047/5a538e0889e434.pdf
    • http://files.campcreekbaptistchurchguntownms.com/uploads/1/3/1/6/131606782/gukujajorab-fuwivu-nadigopoke-vasavalamule.pdf
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/48450578518.pdf
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/xojepilevimumisusazosizor.pdf
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/fevagisiwovurifukuroje.pdf
    • https://cdn.shopify.com/s/files/1/0432/4743/5940/files/88513049599.pdf
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/72985997048.pdf
    • https://cdn.shopify.com/s/files/1/0431/7931/1253/files/jonizutozilinu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3385/4103/files/80433190666.pdf
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/83380154413.pdf
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/78357693523.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/49697055904.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/1/0429/4960/7590/files/fevagisiwovurifukuro

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006944.bin
813322fac0953ed4b426f1ab8c619c90aea48a3bf797255e7a93e291ec505747
pdf-font-stream PDF embedded font (sfnt) at offset 0x6944 4928 bytes
font_01_sfnt_off000079ed.bin
4a4fa11cf6f519e3456de200dc9359c5fc90db350d4d2bfbfe1b38280709c003
pdf-font-stream PDF embedded font (sfnt) at offset 0x79ED 11204 bytes