Malicious PDF — malware analysis report

Static analysis result for SHA-256 77482a8c28a2a9fa…

MALICIOUS

PDF

205.3 KB Created: 2021-07-30 20:16:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 7cd22c4bbc3f8c8d23116a29a215f85a SHA-1: 789e3b1396edcd999b0f810f374b9be57750204a SHA-256: 77482a8c28a2a9fa654af36836d41f384359ecd7ea15404ab414d5c1c749eaa4
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress upload directories, suggesting it's used to distribute or host malicious content. The presence of external URIs and the compromised CMS upload link farm indicate a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7914

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.
  • 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 http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160cb159de1a90---divofuto.pdf In PDF document text
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ba846ad38---38405031429.pdfIn PDF document text
    • http://vandientuchinhhang.com/upload/files/47930806932.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080022de3a9c---96605305257.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f83f3aad8e9---92781305149.pdfIn PDF document text
    • http://ranahytta.com/ckfinder/userfiles/files/lolarokitajatudis.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160aa44f9b2711---93234985182.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/7b079246fcd11b5cb12a7ca21ff82e4c/35633453194.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/82234ff5625dc96b833293b9577bee3a/winalukut.pdfIn PDF document text
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/fa6a71f3b03f03520fe560a27274dbc0/62003059333.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/0f1940663fe84dbd57f8f017600058b2/nobosomitolitafim.pdfIn PDF document text
    • http://ytovietnam.net/ckfinder/userfiles/files/sarupamosenogosatataxudas.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c4b56dbd4af---8852774225.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ee7645a0132---nixeg.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/8ddac11308fb514fefb8eba0b14d852f/56757654781.pdfIn PDF document text
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/c9fb1da8c901760abe4d57b59989b3c2/94661712492.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/1537ac3279fd932d4681b5cb82d9a66d/8867982728.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bcf5e8966e---welakiselinunanuludatodo.pdfIn PDF document text
    • https://imagebeaute.fr/userfiles/file/34730519913.pdfIn PDF document text
    • https://dunaweb.co/bg_image/files/sedezobepasazo.pdfIn PDF document text
    • https://fleuriste79.fr/ckfinder/userfiles/files/68857061805.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/aa8ffbb076ffe9635deccce11a477283/95800561302.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/16089a59881f18---wapagoxazefojenet.pdfIn PDF document text
    • http://renovfab-menuiserie.com/userfiles/file/butepewazezidura.pdfIn PDF document text
    • http://www.physedu.in/newsite/userfiles/files/48012895501.pdfIn PDF document text
    • http://kotolantopeni.cz/file/15785093071.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/160adee5506959---fijite.pdfIn PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/6nok0hmfiv50vctbpq317kpid5/xerekibezeriwazosurebala.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+set+up+wii+u+sensor+barPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002996d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2996D 12464 bytes
SHA-256: 642ff90700f1b63de8672ab812f3652660d4cd7ed80c80468664dddf11cc0244
font_01_sfnt_off0002c1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1CF 18940 bytes
SHA-256: f6ee7d12fa44c7b2263e9942442dfa71d26e72b9b00922795373c34cfa50389e
font_02_sfnt_off0002f3c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3C9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00030be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BE0 10516 bytes
SHA-256: e45d909c19c16e32de949d92feb0971e7419434148d3f67adf5e4a5a796e0081

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