Malicious PDF — malware analysis report

Static analysis result for SHA-256 cab46f32f2b9bde9…

MALICIOUS

PDF

80.3 KB Created: 2021-09-23 17:00:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 03a5f4b6c9abb83749d05714f20b602c SHA-1: 85f0310e932259ddcedb3c8ad7a3d99b7835faad SHA-256: cab46f32f2b9bde924d30a717297c1aeb43f2f87597fbf97cd4f35eea9296603
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many of which are hosted on compromised or disposable domains, indicating a link farm designed for phishing or malware distribution. The 'SE_CLICKFIX' heuristic suggests the document may instruct users to execute commands directly, a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://oniceh.ru/uplcv?utm_term=cara+mengetahui+lokasi+seseorang+lewat+android PDF link annotation
    • http://kapfenberger-schuetzenverein.at/userfiles/file/mizebavelu.pdfIn PDF document text
    • https://shidoremicrosys.com/media/lidaj.pdfIn PDF document text
    • http://vit-physio.de/file/lumamufesika.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613eeaf857ba8---61686607150.pdfIn PDF document text
    • http://ppogrimall.com/upload/editor_image/file/81552471358.pdfIn PDF document text
    • https://angel-juicer.com/FileData/ckfinder/files/20210912_7805704A6CD64A7B.pdfIn PDF document text
    • http://xn--djr00fsyfv0o5qgy9u.net/filespath/files/20210901160304.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021091521541332.pdfIn PDF document text
    • http://writtenmail.com/upload_images/file/witabewelewibob.pdfIn PDF document text
    • https://ryokanclub.com/FileData/ckfinder/files/20210923_6C7BDDD2C01A4F50.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/16133d64f12b2e---20283715292.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161326e3da4d29---gigijazosimibekisoninilaj.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cfcd0b0aec---basak.pdfIn PDF document text
    • http://krallarintavugu.com/upload/file/23510725247.pdfIn PDF document text
    • https://guclupin.com/calisma2/files/uploads/viwopudejuwefig.pdfIn PDF document text
    • http://hotelrefah4ter.ir/basefile/hotelrefah4terir/files/nuzekotuporepofag.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/6439cdacd7b1ee44ecd8dc24c4cb2a38/gupodanuliponofoletisif.pdfIn PDF document text
    • http://prestopc.it/upload/file/megoloxejoveputemum.pdfIn PDF document text
    • https://dragonexpressml.com/userfiles/files/fajuxexepupekaboku.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e01ba920f8---nizupakewowulip.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/8ba3030c8a2dfa0e0f15cee409a0c82f/63726933870.pdfIn PDF document text
    • https://www.nvsrolko.org/ckfinder/userfiles/files/tobuvitasowowitokixik.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/11sgkoc3v3en6df2p7ltvodu67/lukixavijede.pdfIn PDF document text
    • http://architettipassarinmarzotto.com/userfiles/files/ziwokeva.pdfIn PDF document text
    • http://cukiernia.eu/upload/files/zaridonuvevopor.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d71e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD71E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ef30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF30 16472 bytes
SHA-256: 3370447326860927fb94563e5337c6dd7505544b6fc39fb5826925209e217932
font_02_sfnt_off00011a5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A5E 11004 bytes
SHA-256: 0b60907e85b0a24b8f669a5bc6e75239913b0e75cc523dfe993baf8695e466bb

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