Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 ae5a1cce8261d8d4…

MALICIOUS

PDF / .VIR

58.8 KB Created: 2024-02-16 16:58:44 Authoring application: LibreOffice First seen: 2024-05-07
MD5: 46dd27753113b67a9ea35ec1f43f4ca5 SHA-1: fa3e5dfcd5b2ad59ef45b752e674bbeaf2dbe34b SHA-256: ae5a1cce8261d8d474e2b3bb4b084f128827222f901f176aca90b4ddb7a85090
104 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0573

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 58 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Image-only PDF lure with a single link to a non-reputable host medium PDF_IMAGE_LURE_NONREPUTABLE_LINK
    PDF is image-heavy with little real text and its only clickable action is a single external link to a host that is not known-good. This is the canonical malspam carrier shape — a screenshot-like 'click to view' page whose sole purpose is to funnel the victim to one redirect/landing URL on a compromised or throwaway domain. Flagged suspicious rather than malicious because the link alone (no shortener / typosquat / brand path) is the only corroborator beyond the image lure.
  • 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://rijuwa.yubit.co.za/8952733464833610145267319?fukojavunulamemezagebijuzigufedopupamujakodaderemerapetijebidelimiduwasofujis=zojafoxigolunojagoloxutokakiniwuxetofedugikowopewuwipimidusidoxijusojaxajigowagukimodizijunemitivapoxoripepasivukuxaposagawudaraposadeduravufuvexixukasonobororogimexurubolisezuvekaratozokikalonuwawudit&utm_kwd=noco+genius+10+battery+charger+manual&wuxowaginoxidarifajubotajefirivevikasafozebanisilixaresa=riniziwawenesurisupuzukowumimisasajabaritaxenumetimubivatokotizetaxalafelemorokirozovibutojogejuxaxijawokulusakobapupobebevabebesegexojob In PDF document text
    • https://rijuwa.yubit.co.za/8952733464833610145267319?fukojavunulamemezagebijuzigufedopupamujakodaderemerapetijebidelimiduwasofujis=zojafoxigolunojagoloxutokakiniwuxetofedugikowopewuwipimidusidoxijusojaxajigowagukimodizijunemitivapoxoripepasivukuxaposagawudaraposadeduravufuvexixukasonobororogimexurubolisezuvekaratozokikalonuwawudit&utm_kwd=noco+genius+10+battery+charger+manual&wuxowaginoxidarifajubotajefirivevikasafozebanisilixaresa=riniziwawenesurisupuzukowumimisasajabaritaxenumetimubivatokotizeIn 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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000cbdd.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000cbdd.bin)
🗂 Part of campaign: shared payload a02f67deb0 41 samples

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBDD 8940 bytes
SHA-256: a02f67deb084b7ce8e02d7004994a9dd7e3132fe24919a42c6f0df6ed367c188