Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d07140ccf9a539…

MALICIOUS

PDF

73.3 KB Created: 2021-02-05 06:55:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a937da7ed47160202ed3508fe42d11f8 SHA-1: ac8eeb50ce81e87f85ccfd9c0be071689ed5ef62 SHA-256: 11d07140ccf9a5393e8b4c85ace02f5480e47252363f77df1598fda39574ee23
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • 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
  • 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://bologen.ru/aws?utm_term=battlefield+1943+pc++iso PDF link annotation
    • https://koximewi.weebly.com/uploads/1/3/0/7/130775363/goxefuda.pdfIn PDF document text
    • http://esmoney.site/442284315074kkmi.pdfIn PDF document text
    • https://cdn.sqhk.co/fusojafiza/jciaDkl/shark_attack_robot_wars.pdfIn PDF document text
    • https://cdn.sqhk.co/zijikunu/dnheiiM/notepad-_plus-_plus_mac.pdfIn PDF document text
    • http://myfirstsite.xyz/484638833067359b.pdfIn PDF document text
    • https://nakuzimatixibo.weebly.com/uploads/1/3/5/3/135388853/zoseriwopig-jemage.pdfIn PDF document text
    • https://vibisorimujeke.weebly.com/uploads/1/3/4/3/134344086/4555038.pdfIn PDF document text
    • https://lefiletigej.weebly.com/uploads/1/3/4/5/134597596/digezixilorowi_sarobufudu_fifisil.pdfIn PDF document text
    • https://cdn.sqhk.co/zobelekivix/KhfiiHT/99460386293.pdfIn PDF document text
    • https://numeroluxovuz.weebly.com/uploads/1/3/4/7/134733954/gikolivokuko_jowapuso_momazikomofix.pdfIn PDF document text
    • https://lejigatoni.weebly.com/uploads/1/3/1/8/131871980/5686101.pdfIn PDF document text
    • http://avtovishki-msk.ru/amlife_insurance_berhad_annual_reportfzavs.pdfIn PDF document text
    • https://cdn.sqhk.co/livoluxuwad/hgieFje/81491444222.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dikuwunoxoxa.epizy.com/57910507243.pdfIn PDF document text
    • http://kizosala.epizy.com/jevobagonineko.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_off0000e238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE238 5560 bytes
SHA-256: 93e1863d437a11db056ce54dd8f773a93cfe1dde2c076921a349a146739f2ae5
font_01_sfnt_off0000f543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF543 10340 bytes
SHA-256: 669a761c27408651ae08bf02e71f59f881dd594cb410cd79ed2922ba45e2baee