Malicious PDF — malware analysis report

Static analysis result for SHA-256 6be30120f64507fe…

MALICIOUS

PDF

96.3 KB Created: 2021-03-17 13:37:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c2eb15b15019910d33b0603b73c98c96 SHA-1: 9f2596680cb8fbb2a0b0ff3b0e1c563284e426a8 SHA-256: 6be30120f64507feae7350fc14f5db30f0ca88af46d0da61d15cc27c6bb4d1d8
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/wix?keyword=bmx+park+x+games PDF link annotation
    • https://jojapewabivato.weebly.com/uploads/1/3/1/3/131379205/zaxifuwik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374022/normal_5fd8262d3d278.pdfIn PDF document text
    • https://kanapefa.weebly.com/uploads/1/3/2/7/132740413/jezovog_rejinis_xitupineweziz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366632/normal_60195994ced26.pdfIn PDF document text
    • https://kamabaxi.weebly.com/uploads/1/3/4/6/134650964/1826926.pdfIn PDF document text
    • https://zisatusomet.weebly.com/uploads/1/3/4/8/134872515/3933872.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464313/normal_5ff3b90c54125.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461744/normal_6010c6791c821.pdfIn PDF document text
    • https://fujovufizopi.weebly.com/uploads/1/3/2/7/132710671/1570530.pdfIn PDF document text
    • https://cdn.sqhk.co/kufusivekogo/e0JIwgc/gorilla_flash_drive_cap.pdfIn PDF document text
    • https://vitigamonewus.weebly.com/uploads/1/3/1/4/131406732/5136079.pdfIn PDF document text
    • https://cdn.sqhk.co/kemomonil/RjhPgjQ/74551643946.pdfIn PDF document text
    • https://nitevugumosu.weebly.com/uploads/1/3/4/5/134526644/xanufedoremoso-povurifoz.pdfIn PDF document text
    • http://cardioactiveuficiale.site/musulajewejagakusdzfq7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491164/normal_5ff796cf34a44.pdfIn PDF document text
    • https://cdn.sqhk.co/tedefoso/8ANfBgd/knife_hit_2_crazy_games.pdfIn PDF document text
    • https://biwomewiwuxe.weebly.com/uploads/1/3/4/1/134131409/rewujedir-kanatururavi-damib.pdfIn PDF document text
    • http://bogplaktnc.fun/budget_planner_template_free_ukkpevv.pdfIn PDF document text
    • http://bas-vorota.ru/sefazekuzorobowirizunevak1howy.pdfIn PDF document text
    • https://vipomumukewa.weebly.com/uploads/1/3/0/8/130813786/9506981.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gisoduriri.rf.gd/lyocell_vs_bamboo_sheets.pdfIn PDF document text
    • http://zufomukibataj.rf.gd/47734041665.pdfIn PDF document text
    • http://nolixegoxow.epizy.com/davutos.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013b73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B73 5288 bytes
SHA-256: ab546ca29556b8021fb6528891d1f4d24674133f4fe45a631b821f5bf7d9ef06
font_01_sfnt_off00014d63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D63 11548 bytes
SHA-256: 063bc920ac642ddf26aeb5e37ed64caadafd24dc13c341620e168d0be2526b86

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