Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6542a60899a36bd…

MALICIOUS

PDF

103.2 KB Created: 2021-09-01 21:31:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: cdcf5cd1e5fadb3d74018b9e2b4eab3a SHA-1: c84ed10d5d4b56d8c9c55a455039ca588f64b410 SHA-256: c6542a60899a36bd3863bfeb3904382095966d1288945c1e0506754e82d70e21
204 Risk Score

Malware Insights

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

This PDF document was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains multiple links to potentially compromised WordPress sites and a lure for a password-protected archive, suggesting a phishing or malware delivery attempt. The presence of a download button further supports a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9867

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/105u3d6k6kthhi2oost65e8741/51371389069.pdf In PDF document text
    • http://blpest.com/UserFiles/file/sipopediwar.pdfIn PDF document text
    • http://songiadabinhphuoc.com/upload/ck/files/23766251887.pdfIn PDF document text
    • http://bulgankhangai.mn/userfiles/files/duroruxilatidujonub.pdfIn PDF document text
    • http://ambvet-trefontane.eu/userfiles/files/7603650088.pdfIn PDF document text
    • http://modnyi-buket.ru/uploads/files/dowimajavukagedadipikobez.pdfIn PDF document text
    • http://www.look4job.gr/images/_user_na/file/duweratolipalidopobofezi.pdfIn PDF document text
    • http://salamino.pl/userfiles/file/61814433532.pdfIn PDF document text
    • https://pottoka.info/files/galeria/files/funepajefixi.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/527fe3ec262aedd095b7970fc8743f92/rabepevujuxiwijabe.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/3275114785d67728eb56e35108d000d6/21548251619.pdfIn PDF document text
    • http://www.rosabrockenhaus.ch/ckfinder/userfiles/files/85884952090.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/5c884b33df036fc56faee2c476e8c8aa/fokaxuzokemanitejidabunu.pdfIn PDF document text
    • https://theipbuzz.com/images/file/kemogovixovefanukones.pdfIn PDF document text
    • http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/823b0508b6480043699ee900650ead1e/29262101534.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6e3be429f4---xixukozoxebemefexumudot.pdfIn PDF document text
    • http://www.kilincsweb.hu/fileok/file/89788760759.pdfIn PDF document text
    • https://olterus.com/contents//files/47396343141.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/aic83rra9lif1angevktstfu7i/12934480499.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083515a1b708---dixidesini.pdfIn PDF document text
    • http://konditsionery-reutov.ru/upload_picture/file/xojigatazi.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/a6bb79224673980ecd444e39ef8a967f/57707545924.pdfIn PDF document text
    • http://toflight.mobi/attachment/ckeditor/files/998b514aafbb557b30e2794779f43855.pdfIn PDF document text
    • https://cortopolis.ar/userfiles/file/85968898299.pdfIn PDF document text
    • http://1mosref.ru/ckfinder/userfiles/files/65881346987.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/3d106b9f6cca95d8d3d39d9620465632/72307496957.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0f7509eff1---gepusokabuxewarudogirisar.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=slow+motion+androidPDF 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

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_off00012cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CDB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000144f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144F2 10268 bytes
SHA-256: be43611789fd50d156e6342e4bd200e479c4499d2c2b41a7c1dc23b6a0a4bf4e
font_02_sfnt_off00015c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C03 19404 bytes
SHA-256: 0b8df93ca88b813c53865ad7e0901a378b329dd9ee548e4a96ace68c89f3b6a2

Open this report in the interactive analyzer, or submit your own file for analysis.