Malicious PDF — malware analysis report

Static analysis result for SHA-256 962445384c594860…

MALICIOUS

PDF

219.3 KB Created: 2021-08-02 06:05:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: 30610f8de6780bf7ae2094b19dbd8731 SHA-1: 3b1cda96108cc654844388e78a772347a5ccf652 SHA-256: 962445384c59486070a1938c23bceeacab2b8c8be4f33ab234fdb8957d0ce15b
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains numerous links pointing to compromised WordPress upload directories, suggesting it's part of a phishing campaign to distribute further malicious content. The document body is heavily obfuscated and unreadable, but the presence of external URI heuristics and the compromised CMS upload link farm point to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9709

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/c057787f05bf5eb56cf57cb5d7548c3c/widawidadekavudapobepiru.pdf In PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072751be82a6---82131037331.pdfIn PDF document text
    • http://thankschicken.com/uploads/files/68452800461.pdfIn PDF document text
    • https://o-dance.com/upload/files/gepafuxijudamogozoxis.pdfIn PDF document text
    • http://gdlianyu.com/uploadfiles/file/81841321650.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609c01bcc1a2f---24614197909.pdfIn PDF document text
    • http://minniemleefamilyreunion.com/clients/4/46/4626b253669c69ed517e077132fb6553/File/55717004907.pdfIn PDF document text
    • http://allivecoat.com/userData/board/file/68942808207.pdfIn PDF document text
    • http://soupworld.de/upload/file/mexefibazamoxexi.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/rfmkqft3br77piss229fl98vvv/71686503819.pdfIn PDF document text
    • http://aivieksteslaivas.lv/userfiles/file/68180082583.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b091c88cda9---48703221654.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/3fdbe19e884f0965f89298ae20443c26/46156145994.pdfIn PDF document text
    • http://iwishop.hu/file/muladobot.pdfIn PDF document text
    • https://congthuonghotel.vn/app/webroot/files/images/pages/files/kexutugokaf.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac79697014a---12811733618.pdfIn PDF document text
    • http://olimpic.hu/ckfinder/userfiles/files/75041835899.pdfIn PDF document text
    • http://kleinschaden.expert/userfiles/file/86281536685.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/f1aca36d4d57a55190709f894382069c/miralugek.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160d42bb20afad---81736487438.pdfIn PDF document text
    • http://vizcsap.hu/files/file/pefonutuxif.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d651d45495---febonofutulo.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16088a5a24669c---xipofokav.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=concierto+de+aranjuez+tab+pdfPDF 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_off0002fed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FED1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000316e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316E3 18024 bytes
SHA-256: 7b88303353c9627d79f6ad7e59dbe103ff82c7715b31f1dd7426741f287e517b
font_02_sfnt_off00034554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34554 10860 bytes
SHA-256: cfc09a9c8f509d211a3cdca51c17a8fc39e57c2947faae1414a8ab31fa5e6593

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