Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b973f2dbbba0b85…

MALICIOUS

PDF

68.8 KB Created: 2021-02-12 21:24:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 751d40bae0056be7b9f10a0d203295d7 SHA-1: 02eea21228563d97d2338d6d6e095c7e68d46e0f SHA-256: 5b973f2dbbba0b854fe3b45c5c857debdcfb6e361ec77e29bf727e88153739ee
174 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
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://seumenha.ru/wix?keyword=apk+windows+phone+10 PDF link annotation
    • http://porn77.design/problem_solving_with_c_10th_editiobbaar.pdfIn PDF document text
    • https://gupapuna.weebly.com/uploads/1/3/4/7/134726568/8ed028f83.pdfIn PDF document text
    • https://bogagabav.weebly.com/uploads/1/3/5/3/135305267/lafabegoxetewawiwoni.pdfIn PDF document text
    • http://todolosepaxo.iblogger.org/13630517585.pdfIn PDF document text
    • https://buwumesuja.weebly.com/uploads/1/3/5/3/135303403/7484561.pdfIn PDF document text
    • http://souve.me/965369318739s13n.pdfIn PDF document text
    • http://studyweb.site/grade_9_algebra_printable_worksheetscc9ua.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kuviwobabevi.epizy.com/blank_ice_cream_cone_template.pdfIn PDF document text
    • http://sebilazog.rf.gd/12453779299.pdfIn PDF document text
    • http://wubavon.epizy.com/xawesam.pdfIn PDF document text
    • http://nirutavikuda.epizy.com/lijoxolotikiwoleresijofen.pdfIn PDF document text
    • http://delorikafuba.rf.gd/hello_brother_tamil_video_song_hd.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5E2 4756 bytes
SHA-256: e12c67bfef7313ca419b3b9c0af29cae45a8e2539e38193a78af465505d838fa
font_01_sfnt_off0000d614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD614 10236 bytes
SHA-256: 7f81c795d5de4a714519ca4de6afe8047221a43e40f5ce071b8e8584e8c40091
font_02_sfnt_off0000f8bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3