Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 465e20d66a573801…

MALICIOUS

PDF / .VIR

76.3 KB Created: 2023-09-19 05:14:09 Authoring application: pdf-parser First seen: 2024-10-29
MD5: 7ff789b353fc83044ff7b75448215989 SHA-1: ac10b9de727386a7ae778bc6920c4bc959378f2c SHA-256: 465e20d66a573801d74d9b134b6729935765fce5e7bf5b51aeb94cbf637f9c4d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0670

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://divezoxirasetu.haviol.co.za/702204254106315093?jovenoziwedebidupixigeludiwosaruwalizopemapawijeso=gomunawisafulomotoxuwafenadeforixamokobosifofuvuwonotorosilavekupiwazumaduloneluxubinatufujavesuliwesosagiziguxizeketujidiwuvujobusaboxebezumifinamevigapanixujagugutugasurufesedumegufawamafasafowokozur&keyword=picsay+pro+terbaru+2020+apk&gobofodipozemikoxiwotawetexurelomujawefunusa=kopebigubusepevadewuzuviwefovofajaxeruzoxetopanemagewenazadimufevolabosipokutajosoronakodaruvetabilozojedifegoxuteviwamixidizu In PDF document text
    • https://divezoxirasetu.haviol.co.za/702204254106315093?jovenoziwedebidupixigeludiwosaruwalizopemapawijeso=gomunawisafulomotoxuwafenadeforixamokobosifofuvuwonotorosilavekupiwazumaduloneluxubinatufujavesuliwesosagiziguxizeketujidiwuvujobusaboxebezumifinamevigapanixujagugutugasurufesedumegufawamafasafoPDF link annotation
    • https://divezoxirasetu.haviol.co.za/702204254106315093?jovenoziwedebidupixigeludiwosaruwalizopemapawijeso=gomunawisafulomotoxuwafenadeforixamokobosifofuvuwonotorosilavekupiwazumaduloneluxubinatufujavesuliwesosagiziguxizeketujidiwuvujobusaboxebezumifinamevigapanixujagugutugasurufesedumegufawamafasafowokozur&keyword=picsay+pro+terbaru+2020+apk&gobofodipozemikoxiwotawetexurelomujawefunusa=kopebigubusepevadewuzuviwefovofajaxeruzoxetopanemagewenazadimufevolabosipokutajosoronakodaruvetabilozojedifegoxPDF link annotation
    • 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_off0000e392.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000e392.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE392 15820 bytes
SHA-256: 0af9d301f01939d90b7e1a8d4458f68ab453ad68d41b53193009dad04df14d3a
font_01_sfnt_off00010c34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C34 10900 bytes
SHA-256: e3088641f2d874eebeef9b316530d650068f34edfb56b66ed2ff69791ef4a766