Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ecf91d8fcd87ba…

MALICIOUS

PDF

44.9 KB Created: 2020-07-27 18:15:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 702cd9ebd26edd5081e989cdf58655fa SHA-1: 7235bf6b2413c33eea461e4974ed9296edceb718 SHA-256: f3ecf91d8fcd87ba125296b5ba828b28de97e63d7c56bd0cb6ef9e9ceebf37ec
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Naruto shippuden apk android'. The presence of a 'download button' heuristic further supports the social engineering aspect. The primary attack pattern involves tricking the user into clicking a link that leads to malicious content.

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=naruto+shippuden+apk+android
    • http://files.k9clubhouseymm.ca/uploads/1/3/2/6/132681690/fd3f1d210d649.pdf
    • http://files.warrencountyfoodcorps.com/uploads/1/3/1/4/131438098/gakijofuxe_wexikufoduwagun_waxunejajefo_kefejeveli.pdf
    • http://files.marissadanielledesign.com/uploads/1/3/0/7/130739443/mofokuderiruzokure.pdf
    • https://cdn.shopify.com/s/files/1/0433/0278/1083/files/panoroka.pdf
    • https://cdn.shopify.com/s/files/1/0433/6241/8847/files/setarujizaxemifumibatonek.pdf
    • https://cdn.shopify.com/s/files/1/0437/1732/9064/files/vavusoxazuluziburinuti.pdf
    • https://cdn.shopify.com/s/files/1/0431/7957/3414/files/wuvebifer.pdf
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/97205087110.pdf
    • https://cdn.shopify.com/s/files/1/0431/5178/6135/files/90974004273.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/gavuzafagu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/jikixobekozazuwonagov.pdf
    • https://cdn.shopify.com/s/files/1/0435/5211/2804/files/jotumorisososulizowud.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/35861659947.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/dolenoronakotisi.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_off0000735b.bin
30f157c819ff82f4b8b8184b62687f6b6aa25944bd08558b4a87702514bc33a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x735B 4932 bytes
font_01_sfnt_off00008410.bin
5c657b2bc5267f2cd7df5e78e2b7adea27bb8e3cd913a7dde501cfcc5a0f801b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8410 9992 bytes