Malicious PDF — malware analysis report

Static analysis result for SHA-256 0215401f95bc7884…

MALICIOUS

PDF

78.7 KB Created: 2021-09-01 07:05:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a14180f9ae2c344d8e591f439fa20c06 SHA-1: 767e82e7dd4dff9fd2122b9d2bf84b45c046481b SHA-256: 0215401f95bc78848e4b1b676405368bdb98b180bc0bddfaab15ba26cbfd5ae1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link farm pointing to numerous URLs hosted on compromised websites, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of multiple external URIs and compromised CMS upload links suggests the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/c4868a339d865a6cf004cd8a03391b9a/gemivubobevexevigenumap.pdf In PDF document text
    • https://dancleland.com/img/upload/file/nikijef.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/e7673a05c49b9379722f6a8fde6a3ede/81289766702.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/0f2qcal4167e91drc8ccp6osq8/jiribigomovomizekod.pdfIn PDF document text
    • http://orzo.cz/uploaded/files/pavusazevexafujonow.pdfIn PDF document text
    • http://karpatskiles.ru/store/file/98825868914.pdfIn PDF document text
    • http://www.oiseaubleu-promo.fr/userfiles/file/tigegutudi.pdfIn PDF document text
    • https://bookatowncar.com/userfiles/file/gofivemukenobesedafaru.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609434dc8711b---nogikipiwijofomubi.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/969eb1852c6696aa0712f77e6c89d33d/zakapobu.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/cqaqam1vfq9c9t81tpoj6qh0to/9178505880.pdfIn PDF document text
    • https://nusantarabet4d1.com/contents//files/84047782054.pdfIn PDF document text
    • http://fipjp.com/userfiles/file/dofamogijujajuser.pdfIn PDF document text
    • https://tennis94.fr/img/pics/files/segugobu.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/759a75f57cc7ecbcf71082ba942b9d95/sonabunifixagabixibe.pdfIn PDF document text
    • https://sahyadrisevasanstha.in/userfiles/file/sivasokidabazavolazeluzi.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c88184e2cbc---posafezikarij.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc981cac91---48762795695.pdfIn PDF document text
    • http://numismatika-nbkpdy.cz/userfiles/file/tasudowe.pdfIn PDF document text
    • https://tanhoaphat.vn/userfiles/file/52569813182.pdfIn PDF document text
    • http://villaelen.it/userfiles/files/rekefejenagi.pdfIn PDF document text
    • https://sjalikave.hu/pictures/file/92831147134.pdfIn PDF document text
    • http://contextuae.com/resimler/files/maduzekenodafada.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=odd+and+endsPDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC3 9812 bytes
SHA-256: f40e5b498aff5291c9b8cacdfd27f3141c2205dff307b93edcfc69ff647d34f7
font_01_sfnt_off0000e26c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fa7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7E 19252 bytes
SHA-256: 01aeb11f9532a8b634bedda57d6faabe3851c6ff836d739766794ae6ababdec5

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