Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf3c3aa29958c92f…

MALICIOUS

PDF

68.4 KB Created: 2021-02-06 17:00:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: aadffd7b899147bbd0e4c4b999b96f8c SHA-1: e23a288146869a88d1084d209d3afdceab1d9657 SHA-256: cf3c3aa29958c92fd80cb7f9305ca31484d856be0e4698b34d2efc1e6f35300c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://druttle.ru/wb?keyword=treble%20clef%20note%20reading%20pdf PDF link annotation
    • http://eeeeeyyy.space/wafabotogiusajt.pdfIn PDF document text
    • https://cdn.sqhk.co/wawerugile/ght0n8M/jopuzukerisafi.pdfIn PDF document text
    • http://lifeshop.pro/gudelagexulegikupapimakfa8n.pdfIn PDF document text
    • http://tukazijib.22web.org/java_full_video_tutorial_free.pdfIn PDF document text
    • http://babysampler.com/77443373922zf1it.pdfIn PDF document text
    • https://niromovikusuzu.weebly.com/uploads/1/3/4/6/134651616/f4d8ed725d5f.pdfIn PDF document text
    • http://deteluwo.iblogger.org/amiga_os_3._1._4.pdfIn PDF document text
    • https://cdn.sqhk.co/pidodalatip/f0lL5me/93941139864.pdfIn PDF document text
    • https://cdn.sqhk.co/fozuwasixeja/jbhh0gc/vulepenezimufunajijamunu.pdfIn PDF document text
    • http://netzamka.ru/kesenozi5rol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tuzamada/interagency_fire_report.pdfIn PDF document text
    • http://dimogotewebi.epizy.com/sijiliwefafilofiruj.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/zalexapupafukipatod.pdfIn PDF document text
    • http://lotumimo.epizy.com/vidmate_software_free_softonic.pdfIn PDF document text
    • http://xibubew.epizy.com/10548847313.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_off0000ce62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE62 5232 bytes
SHA-256: d7c89ca62a8f7ea7d37d64c8a61e2800caa2406d183cb7e03117e30c1dc746a8
font_01_sfnt_off0000e040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE040 10856 bytes
SHA-256: ac21288db884f60714ab3c8df50a0eca6dbf4926cb831381a0869386c160b726