Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d68d219549e7ccb…

MALICIOUS

PDF

68.4 KB Created: 2020-11-24 06:46:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99784c7448a31c31604fbf2fbcfe193f SHA-1: 67804ba3e2ae64c4ebecfd1f503e3e9dfcbd12a4 SHA-256: 8d68d219549e7ccb41813643b55b472d85549023b98963ff6bcc092bb75e7015
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a large number of external links, suggesting a link farm or redirection scheme designed to lead users to potentially harmful websites. The document body, though heavily obfuscated, presents itself as a 'scope management plan template example', a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://trafficel.ru/aws?utm_term=scope+management+plan+template+example
    • https://cdn-cms.f-static.net/uploads/4378425/normal_5f9806cd75c42.pdf
    • https://komamopiragi.weebly.com/uploads/1/3/4/4/134444029/pavofu_bomajiwi_woref_tadivotezibam.pdf
    • https://dokojivoko.weebly.com/uploads/1/3/4/3/134395563/9450455.pdf
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/acba796e1.pdf
    • https://cdn-cms.f-static.net/uploads/4381294/normal_5fb46f3544c45.pdf
    • https://cdn-cms.f-static.net/uploads/4369511/normal_5f8f239661aa1.pdf
    • https://lezaxuvetevomuf.weebly.com/uploads/1/3/4/3/134370754/007b0fc4.pdf
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/dd9033d67f05d8.pdf
    • https://cdn-cms.f-static.net/uploads/4423166/normal_5f9cd7d1eb3f6.pdf
    • https://cdn-cms.f-static.net/uploads/4471948/normal_5fb3e8345ba2e.pdf
    • https://cdn-cms.f-static.net/uploads/4375206/normal_5f8b57123f911.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pegek/indus_river_valley_technological_advances.pdf
    • https://s3.amazonaws.com/sowewazulejewi/zufowabufebaxe.pdf
    • https://s3.amazonaws.com/leributafa/nobefekiperitulowubodu.pdf
    • https://s3.amazonaws.com/vezosoluvezoj/58027006527.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0bb.bin
c2f1e47760855f4eb432d826912f8a1bee0867200d3f389c24db68f353a077b8
pdf-font-stream PDF embedded font (sfnt) at offset 0xD0BB 5148 bytes
font_01_sfnt_off0000e23b.bin
60de97271d8c229201f1a34563189caa78f8f465492d8c9e746e19a4e0597aa6
pdf-font-stream PDF embedded font (sfnt) at offset 0xE23B 10044 bytes