Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 1fde8a455af77574…

MALICIOUS

PDF / .VIR

468.7 KB Created: 2023-11-10 03:08:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2024-10-24
MD5: c446e1bc486bf4b0fea900a7cbdd09f5 SHA-1: 942923b392105fa201f588b4b7877336edfc6516 SHA-256: 1fde8a455af775747772bd4a87f6fe8a1fa7c5ce8aac9835b454940e98a8e672
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8636

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://christian-jacq-epub-gratuit.cobblestonehouse.com/melomajuki.pdf In PDF document text
    • https://used-toyota-camry-manual-transmission.twilighttealounge.com/wasozukifegujekevuxidudo.pdfIn PDF document text
    • https://gigabyte-ga-x99-gaming-5-manual.mackayscm.com/popugazadatumoxuzilu.pdfIn PDF document text
    • https://pozulaka.xenina.co.za/37645223841986220564353835?vaxoninebaxirakonowovalanaditelibejama=posuzafetadagirijiburowikalapotovebakaniwiwikuzuzixakovujugexoxutaxemegutugitunubifiziwunegofamudajeronomawakasadafogebupiveroforobuxujewivabetajabowefofopurobobokekobexanoxipifujotazagelisaweluxudukanosok&utm_term=mapa+fisico+espa%C3%B1a+rios&reraxutezogisizimusezumakenofonesorutojamidumepuradasabatijovirukudibubekinerarijat=fuvuvojunuzomuvasofupeguvebolalupixebisemovugokotudaguxuduwitudupalorapojewagofuvipamijedivoxutitoramewodefosufumutufoxigabubabedetavesexevexiruzonoIn PDF document text
    • https://pozulaka.xenina.co.za/37645223841986220564353835?vaxoninebaxirakonowovalanaditelibejama=posuzafetadagirijiburowikalapotovebakaniwiwikuzuzixakovujugexoxutaxemegutugitunubifiziwunegofamudajeronomawakasadafogebupiveroforobuxujewivabetajabowefofopurobobokekobexanoxipifujotazagelisaweluxudukanosoPDF link annotation
    • https://pozulaka.xenina.co.za/37645223841986220564353835?vaxoninebaxirakonowovalanaditelibejama=posuzafetadagirijiburowikalapotovebakaniwiwikuzuzixakovujugexoxutaxemegutugitunubifiziwunegofamudajeronomawakasadafogebupiveroforobuxujewivabetajabowefofopurobobokekobexanoxipifujotazagelisaweluxudukanosok&utm_term=mapa+fisico+espa%C3%B1a+rios&reraxutezogisizimusezumakenofonesorutojamidumepuradasabatijovirukudibubekinerarijat=fuvuvojunuzomuvasofupeguvebolalupixebisemovugokotudaguxuduwitudupalorapojewaPDF link annotation
    • https://img1.wsimg.com/blobby/go/41539997-c92d-44a4-b09b-2839c853bdf1/downloads/metro_events_suva.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/1b7e2d36-7209-4d75-ae3f-946a2a138229/downloads/can_you_reheat_cauliflower_mashed_potatoes.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/91e67715-e2ec-47a8-8a0b-973566e94668/downloads/ziwawepudi.pdfIn PDF document text
    • https://uploads-ssl.webflow.com/64f8402352213bc21f956de3/654d60def474f05368b1b5e7_nimajuna.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/495b88f9-f869-4e05-907f-586b63a6f8c6/downloads/60503119888.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/b7bd8abf-f7ec-44f9-938a-1080981be41a/downloads/77300229256.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/1b23ebd8-de73-4b22-ae31-218d30c2746a/downloads/52228691847.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00070205.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00070205.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00070205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70205 17292 bytes
SHA-256: a29ac8490abdd92da002ce67ace60112c53d70f5c0f0b2715402d0cfe3760d90
font_01_sfnt_off00072caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CAF 10424 bytes
SHA-256: 89fda4ca1d148fe40fbb7727037e7162f10a0a6a6201724edd4e29e9bd74b483