Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbcb7b20c0ce7858…

MALICIOUS

PDF

89.2 KB Created: 2021-06-28 14:37:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a91488208090ee4466c20bba65aa5372 SHA-1: 94af51eb116de6ad64e46239bef0a65c2e749761 SHA-256: dbcb7b20c0ce78587741b46624522efecf4ab4c0065b0e04bdb75ab0676e1b4d
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains heuristics indicating it is part of an advance-fee scam and an MFA/one-time-code harvesting lure. The embedded URL `https://oniceh.ru/uplcv?utm_term=save+pdf+with+form+filled` likely leads to a phishing page designed to steal credentials or financial information. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://oniceh.ru/uplcv?utm_term=save+pdf+with+form+filled
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/b4159a90f3b008744ffaf7046d84ad02/bufijemulupugoputum.pdf
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca51097ed1---patis.pdf
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/546c7cc14d1e267b9cf8194a635b7e22/42039596089.pdf
    • https://hmanagement.net/userfiles/file/96324519567.pdf
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a43ad602ccc---64555387250.pdf
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/00279e806ae09b913e7679ae2bddfd61/75038627137.pdf
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1aa5e0895a---witofetejotivisuvikuzig.pdf
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071b57b04775---luzigefunezomo.pdf
    • http://www.advokat.com/app/webroot/img/fck/file/15876002990.pdf
    • http://wchs65.org/clients/b/bb/bb65574a37642f7fe3135935df861e67/File/80938590204.pdf
    • http://nessium.net/userfiles/file/83642471628.pdf
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073c616618a8---lorakosuxadegi.pdf
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/8d29b6fb209125bbd132ade333744747/85084878161.pdf
    • http://31kouqiang.com/userfiles/file/1624467442.pdf
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9cdaf8bdc8---xirejejewisipo.pdf
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/cdefc7cbdcd02bd3965b119fb88b382b/tarozururoxeduwawizi.pdf
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608bd73c703e8---80209610291.pdf
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160aa00d28c076---12531396071.pdf
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160960542ee08f---13893087526.pdf
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609079433a962---44330205226.pdf
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/ad7b9837a603a56762fedf7a768c0673/46995994231.pdf
    • https://atcotourismtravel.com/userfiles/file/nisujekofakizaz.pdf
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160791e295709b---zadarikiputozol.pdf
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608eab0a9f680---roxezetimotaxejajexetenad.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9fa.bin
5486e7b0e64e3833913dc4722fe60b96c83866652b9f7de1f0fd377a9df0285e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9FA 10716 bytes
font_01_sfnt_off0001129f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1129F 16792 bytes
font_02_sfnt_off00012ab1.bin
0fd1868782373c7a9b0865fbb0e527884d7ff0d17ff5156b239bc7a581df7193
pdf-font-stream PDF embedded font (sfnt) at offset 0x12AB1 17208 bytes