Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cc43618a249b09e…

MALICIOUS

PDF

84.5 KB Created: 2021-09-01 23:36:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 32708e001bb640fd7cba6940157e496f SHA-1: 0a8c2d3cd35e543f59d742ff264df67efa2693ef SHA-256: 0cc43618a249b09e5718a998e1c53be551bb1a80c629a017349918e8e6314194
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document exhibits characteristics of a phishing lure, indicated by numerous embedded URLs pointing to compromised CMS uploads and disposable hosting. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to phishing sites or download further malware. No scripts were extracted, but the extensive link farm is the primary attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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
  • 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.
  • 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://chcial.ru/uplcv?utm_term=gta+5+armored+truck+locations+map PDF link annotation
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/rjfeass9de85ejekddtqlduns4/muverasuxaz.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/08ce2bb47cbe1035c273332ffff1bd9e/gabeverixufavowulunuge.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/89077263675.pdfIn PDF document text
    • https://thediamangroup.com/_images/files/xegonasabi.pdfIn PDF document text
    • https://qkon.ca/images/file/mibiz.pdfIn PDF document text
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/e24b24ae9481cf44e60207373ae30207/77500384118.pdfIn PDF document text
    • http://reinforcingourheritage.com/clients/0/08/0860c2a235168fe7e4a745c824023bdd/File/64911287429.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/73344da0b85a769c382100e69d7ed5de/29137647772.pdfIn PDF document text
    • https://kristaldicarlo.com/userfiles/file/40748900923.pdfIn PDF document text
    • http://bukhatirhomes.com/userfiles/file/xaketife.pdfIn PDF document text
    • http://glina-master.ru/admin/ckfinder/userfiles/files/midewabopeko.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1d7cee21fa---lejiro.pdfIn PDF document text
    • http://sochi-riba.ru/ckfinder/userfiles/files/18711554125.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160725633aec3a---xejosoxedefopif.pdfIn PDF document text
    • http://jirehenl.com/userfiles/file/160005362555.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a28d951b83---mubadevugoduva.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ab2e7d09845---95687091165.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078657795ac0---79231633839.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/af21ab80bb69aaa5a22a45fa7f6c53af/37401769815.pdfIn PDF document text
    • http://hungthanhauto.com/luutru/files/12472053462.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/013cc68bb072c6b8dcd27af0d091aff5/14468246383.pdfIn PDF document text
    • http://www.s4b.nl/upload/files/javotoxovadotiz.pdfIn PDF document text
    • http://getvisa.ru/images/File/sujironegaxeroxuga.pdfIn PDF document text
    • http://gpsputhuppally.com/userfiles/file/remiziwogafurifubami.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dfb8fc6949---vilegejejevuteguvewegoneb.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083c31e3eaae---pokibifapikewasuxavo.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE343 17784 bytes
SHA-256: b19fbe5b955fd7204fb26cff17d14a30d0032c9db642e4658e6b2297b7bb0dac
font_01_sfnt_off00011162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11162 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12979 11040 bytes
SHA-256: d82c46180c338b9dd66f5d2a145ceb3ff207f511cd4d52e43f8bd9114ff01e91

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