Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 502b00ccb712f48d…

MALICIOUS

PDF / .VIR

566.8 KB Created: 2023-11-10 02:51:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2024-10-23
MD5: 0572d94e4f4d67733a537c630a0876ac SHA-1: bc295386227bc85a0848e6492757e1cd7c689df1 SHA-256: 502b00ccb712f48d771fde4d51c06919cca3fa977510071f0ac3d915f0864fe9
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6995

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
  • 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.
  • 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://sutomime.mctreadiness.com/21613904139.pdf In PDF document text
    • https://kobod.brittanygroundhouse.com/vatekubonebukivukibowo.pdfIn PDF document text
    • https://paforiluju.nhlbi-proteomics.org/gifosid.pdfIn PDF document text
    • https://nubivodo.tridentms.com/revoref.pdfIn PDF document text
    • https://lazum.mctreadiness.com/budokirisado.pdfIn PDF document text
    • https://kafovevuro.mebel-rastem.com/30838502065.pdfIn PDF document text
    • https://wapinuw.nhlbi-proteomics.org/kotujafu.pdfIn PDF document text
    • https://sixawodex.biaremodelor.org/wikewudesuberepomaxa.pdfIn PDF document text
    • https://nisojew.loheb.co.za/39095445217168387829855033?xezafegixupeniwapemiparolomoxutosuf=dokuziduvimiludabizamogibojexixakivubelefojewogekejogapebemekanikuvutetabuminoxuwigetudabekafifidubewejuzavomowagafujajuzeratabomusawubavosafuxizavudikivisaparigudegovixutotikunanipazowifixukekikorokef&keyword=quien+escribio+don+juan+tenorio&bekamesagiwejewaruvokulejobajugemejozovuwasejakuzagufepufavuxudamewovaferevexoxulibel=xopunugovofonazoxurozusibudukiteledonomonedifokurejaxomerodezibubonelirekisapidilimikovemivezilutusabajurisinamosikedeIn PDF document text
    • https://momeguvex.ctrlproxy.org/93477904169.pdfIn PDF document text
    • https://nisojew.loheb.co.za/39095445217168387829855033?xezafegixupeniwapemiparolomoxutosuf=dokuziduvimiludabizamogibojexixakivubelefojewogekejogapebemekanikuvutetabuminoxuwigetudabekafifidubewejuzavomowagafujajuzeratabomusawubavosafuxizavudikivisaparigudegovixutotikunanipazowifixukekikorokef&keywordPDF link annotation
    • https://nisojew.loheb.co.za/39095445217168387829855033?xezafegixupeniwapemiparolomoxutosuf=dokuziduvimiludabizamogibojexixakivubelefojewogekejogapebemekanikuvutetabuminoxuwigetudabekafifidubewejuzavomowagafujajuzeratabomusawubavosafuxizavudikivisaparigudegovixutotikunanipazowifixukekikorokef&keyword=quien+escribio+don+juan+tenorio&bekamesagiwejewaruvokulejobajugemejozovuwasejakuzagufepufavuxudamewovaferevexoxulibel=xopunugovofonazoxurozusibudukiteledonomonedifokurejaxomerodezibubonelirekisapidilPDF 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_off00088548.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00088548.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00088548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88548 18376 bytes
SHA-256: c0970049efd28eab7163a8faf8836f96fdfbb0740dd0d464c670ed20f92aac31
font_01_sfnt_off0008b3a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3A8 10748 bytes
SHA-256: 78db367e1130f74096e0e0f686c1b85c10819ff930c0364658a1a850f024cb7d