Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 be3ed10ebcc3834e…

MALICIOUS

PDF / .VIR

702.2 KB Created: 2023-11-12 01:36:23 +02:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 5.15.10) First seen: 2024-09-20
MD5: c1af668d5f4b2ee82e68eb4b2aa9b4cf SHA-1: 2cb083264fe3f18584abd6ef8a1b67d33ef6333a SHA-256: be3ed10ebcc3834e424dbdd552501d089f420ac28e0391eb28c4523a71869844
194 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0051

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://rogasofi.octort.co.za/654361679246616939?sajusukufexibexaporudukevasepomigawe=wimurejunajakifivifofedatezadidagabusiwaferozovoduvoderudamopisonalabadimopesokexinaraxowasuzetexamolebugopaxamogirupedabalujekepefikigowafibalinogokugizuwunedavonopimunanusinuzebonabatotaxaxepimemenewiloto&keyword=air+fryer+cooking+times+chart+pdf+templates+pdf+free+download&tagilatetelapowumodipuvalonidavisivedawesomuwugilon=lakupopajesunimisazorimipabunijipekarevabezulixuxexabadexiramipivomudaxezonixakosivominonisepisinofakemagaxijiralositijirapupuvetalenajuvote In PDF document text
    • https://rogasofi.octort.co.za/654361679246616939?sajusukufexibexaporudukevasepomigawe=wimurejunajakifivifofedatezadidagabusiwaferozovoduvoderudamopisonalabadimopesokexinaraxowasuzetexamolebugopaxamogirupedabalujekepefikigowafibalinogokugizuwunedavonopimunanusinuzebonabatotaxaxepimemenewiloto&keywordPDF link annotation
    • https://rogasofi.octort.co.za/654361679246616939?sajusukufexibexaporudukevasepomigawe=wimurejunajakifivifofedatezadidagabusiwaferozovoduvoderudamopisonalabadimopesokexinaraxowasuzetexamolebugopaxamogirupedabalujekepefikigowafibalinogokugizuwunedavonopimunanusinuzebonabatotaxaxepimemenewiloto&keyword=air+fryer+cooking+times+chart+pdf+templates+pdf+free+download&tagilatetelapowumodipuvalonidavisivedawesomuwugilon=lakupopajesunimisazorimipabunijipekarevabezulixuxexabadexiramipivomudaxezonixakosivomPDF 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_off000a9a60.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000a9a60.bin)
    • http://gnu.org/licenses/gpl.htmlIn extracted file (font_02_sfnt_off000ae262.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000a9a60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9A60 17352 bytes
SHA-256: 2aae36df986679a43f18ddfdda60bc9d100a5809dbbae3ef7a8810771ca2ac4b
font_01_sfnt_off000ac828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC828 11332 bytes
SHA-256: 169713c80fc95963c048ef442cb017f18c98f3605f3c58ea4e77cac314c3419c
font_02_sfnt_off000ae262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE262 2076 bytes
SHA-256: c5e62124646510f5178029c3358f3aecb2cc5b0e7f6c58087c3cb047b8690067