Malicious PDF — malware analysis report

Static analysis result for SHA-256 77d45bcdc3400326…

MALICIOUS

PDF

66.6 KB Created: 2021-02-07 11:44:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8f1b0c476aaabf189b01ccc54ac3524b SHA-1: bed16685fd84fb58c356fe29e93915337e59026f SHA-256: 77d45bcdc3400326f0b478dbacf95990d775f581b1878dec03acf8adb444b179
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wb?keyword=filtre%20aspirateur%20electrolux%20silent%20performer PDF link annotation
    • https://danikobunib.weebly.com/uploads/1/3/4/7/134755608/5525166.pdfIn PDF document text
    • https://cdn.sqhk.co/sazalevimit/25hiXRQ/35027483936.pdfIn PDF document text
    • https://tiluzapibijodok.weebly.com/uploads/1/3/4/2/134265907/6495908.pdfIn PDF document text
    • http://talebakela.iblogger.org/riveminigimu.pdfIn PDF document text
    • https://vuminuzatadabem.weebly.com/uploads/1/3/4/3/134311796/fireliza_bababatekujaw.pdfIn PDF document text
    • https://pebawozo.weebly.com/uploads/1/3/4/8/134865175/rogomef-xonedeletudojot-woraxevij.pdfIn PDF document text
    • https://wotawodakel.weebly.com/uploads/1/3/5/3/135316359/xizadufavu_guminuwif.pdfIn PDF document text
    • http://zalewef.iblogger.org/bologna_airport_arrival_information.pdfIn PDF document text
    • https://repawuwo.weebly.com/uploads/1/3/5/3/135313919/sobutunoxezot.pdfIn PDF document text
    • http://prodive.su/suzebumoqj1jg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kamiwivexa.epizy.com/37863189754.pdfIn PDF document text
    • http://vedidutumi.rf.gd/93974770991.pdfIn PDF document text
    • http://femavumifixomud.rf.gd/24180444365.pdfIn PDF document text
    • http://nawexox.epizy.com/wirutoron.pdfIn PDF document text
    • http://lisunamubeso.epizy.com/digital_marketing_strategy_proposal_template.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_off0000c5ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5AE 5184 bytes
SHA-256: a73648896e133e316b68bf34e206ca4baccc8f0d4fc1f811dd9a0aa5ddbd3765
font_01_sfnt_off0000d745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD745 11332 bytes
SHA-256: 06f9e50203c7ec573319a361078185209cfaf4a9d7a411f9b4e378d586bedca5