Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 0197831c386f85db…

MALICIOUS

PDF / .VIR

92.2 KB Created: 2021-07-04 20:54:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2024-09-20
MD5: 1c0f47acdd748b84d991b5657fdd0235 SHA-1: 102a65e7234ae9aa24dce006749a0e50bc851ece SHA-256: 0197831c386f85dbc317460acea3f24cf642043cf497f53504c09a96a97815d0
181 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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 farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://nomylo.ru/uplcv?utm_term=parts+of+connective+tissue PDF link annotation
    • http://argyler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078863640f37---87293687876.pdfIn PDF document text
    • https://rm-parketi.si/uploads/xexeporerotawope.pdfIn PDF document text
    • http://rentbucharest.net/images/userfiles/16398744399.pdfIn PDF document text
    • https://anmoul.com/userfiles/file/62573757280.pdfIn PDF document text
    • http://artecgroupservices.com/imagenes/file/17513246204.pdfIn PDF document text
    • http://guitarenko.fr/img/files/11498044626.pdfIn PDF document text
    • http://thegioidahoacuong.com/uploads/image/files/vukigotewogufab.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/7r7h0kt9ok80i82d12k5b866ih/mesopegalidokoturegol.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a62755a29d---77700028130.pdfIn PDF document text
    • http://euroinstytut.pl/galeria/file/87784523541.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddf9287a950---38845078486.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c76191ee59.pdfIn PDF document text
    • https://ozsersogutma.com/upload/files/51845226021.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076743fc81fe---mabuwunelakenijiwareru.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/16088fec23060d---kukileral.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5852e14545---78977633816.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a997422697f---nuxenuxajuvep.pdfIn PDF document text
    • https://heritagecambodiatravel.com/userfiles/file/baroboxo.pdfIn PDF document text
    • http://thepdaitruongphat.com/upload/ck/files/zozulosex.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/6c790c1fc094efc43ac8a34df5cbfb34/luzesilubavanekogiladinu.pdfIn PDF document text
    • https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/83dcf34386982a3abf4259ee24318f69/15347117413.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a2f457037f---vokejumetujelolit.pdfIn PDF document text
    • https://addsfly.com/userfiles/file/nujafipojibuzinivaxu.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160848a3614e43---xelimexaw.pdfIn PDF document text
    • https://dijitalsanat.link/upload/files/zezegasabe.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_off00010757.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00010757.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10757 16952 bytes
SHA-256: eec8217ee56bcd0891e79dcd6830dac7273e6404a60c7f4dcbcaff0113618c4b
font_01_sfnt_off0001339d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1339D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BB4 10448 bytes
SHA-256: d4f86b67da8e47fe3b1b4b9076d88133daaf94549900e5b79c031f5a7f1904f1