Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e6fcd6e15c7f39…

MALICIOUS

PDF

88.3 KB Created: 2021-07-07 07:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: e6a29cb27e358301e45c1c6cc032a030 SHA-1: 582ab2afbc958885d120ce1c3280143d40a0068e SHA-256: 32e6fcd6e15c7f3920d72d17c4ef84c2ff709762a96a9b75d9e7e21ba924a38e
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to download further malware or engage in phishing activities. No scripts were extracted, but the structure and URL patterns are indicative of a malicious link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 6

  • 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.
  • 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://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160cbbd4840319---konixuv.pdf In PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607176bed23d6---56974283430.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/160862f6b881e4---zemuje.pdfIn PDF document text
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/e63a0dace225c138b788b33e9857a4a7/99716705632.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a7e5cd06d77---vowugerobegomilixavigizas.pdfIn PDF document text
    • http://burattinojatek.hu/userfiles/file/jijukapazit.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607510592e653---18234585374.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/1vru4kl98kk09afh3kgn2p1fm3/81048670867.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/1onfiisnj65m72ossckrggima5/18822764926.pdfIn PDF document text
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/bcc21358061a9752828f37468230714e/59691391221.pdfIn PDF document text
    • http://lungshingcentre.com/userfiles/zikamorepusuginetusowulo.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/4tvhtff21b06p96g0htj8kjm0i/21982160445.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/8b6470139e70933465a3ebfc0258c193/peramiruzifapapepevevan.pdfIn PDF document text
    • http://transfertrolley.cn/d/files/kopasenelu.pdfIn PDF document text
    • http://scro.ru/pic/file/zomaboben.pdfIn PDF document text
    • https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/pnlo8e32n6ai5415cle2t4ejc1/35894010507.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ca507f1b3a---tazejidafuvonafufibufuxa.pdfIn PDF document text
    • http://gospelinamerica.com/clients/874377/File/27045111899.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/9f98b950c1a501c5a07099627dc14286/mekif.pdfIn PDF document text
    • http://raegcafe.com/uploads/files/jeregexofafuvefe.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16099f93e982d9---74994317880.pdfIn PDF document text
    • https://pointswestliving.com/ckfinder/userfiles/files/60074464712.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/cd06272350759eb8325ba29c257dc49e/fuporubiw.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/tijawujibukanoke.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607afc1b3cefd---6125112265.pdfIn PDF document text
    • http://asbazainville.org/userfiles/file/balawumuli.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=1.04+acres+to+square+feetPDF 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_off0000f6b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B2 10556 bytes
SHA-256: 1508f9abc3b7d31e1a5c42cdbfe0fe8e1f558ca49d60128dbdc9bd777daa72be
font_01_sfnt_off00010efd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EFD 17132 bytes
SHA-256: d8718fbc1e7bf1a835cac9594518c1dd86e1a8673a6d1e14d20b9f475c0fa9cf
font_02_sfnt_off00013bce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BCE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1