Malicious PDF — malware analysis report

Static analysis result for SHA-256 67a43b30fe497f87…

MALICIOUS

PDF

77.5 KB Created: 2021-06-29 13:15:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a243a46f940053806cd8e5c98a40f224 SHA-1: 03cbcf183fd89bc6c1b8f11bc0d818724c0ed72c SHA-256: 67a43b30fe497f876e735c13e8658cea688647b87537b223dfa8329fae084188
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple heuristic firings indicating malicious links, including algorithmically-generated URLs and links to compromised WordPress sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware delivery. Although no scripts were directly extracted, the embedded URLs are the primary indicators of compromise and point to external malicious resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • 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=international+college+of+health+science+florida
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d67eb6c8a9a---22521927206.pdf
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/nbc2ct4l6piodbosb3c449o5k1/funatejirepoli.pdf
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/160757e29cac13---fewipigobazo.pdf
    • http://broadviewlibrary.org/uploaded_bvlib/file/78603581663.pdf
    • http://anhbanglaw.com/userfiles/file/31322480673.pdf
    • https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/07b83038dd57a862b3e5e948ff49df4a/saxisi.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d699de4bd7c---fixemilowaduraxexova.pdf
    • http://cosonhuath.com/hinhanh_fckeditor/file/37205246735.pdf
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609afae367e9c---jefozabobel.pdf
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0c4cac463---bezedijiwurinujebisex.pdf
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/6d7ca62d28855849f85f234ba13675a2/surugobi.pdf
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160735226941f7---puposa.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d6998999930---51535883237.pdf
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160ccd1fec7697---27789550635.pdf
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160853d38eabea---petokawiduloluru.pdf
    • http://angarakshaksecurity.com/userfiles/file/boturazebofavefomoko.pdf
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a97bb5a221d---kisevexeju.pdf
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/a4bd3e9263d2eef031125941996d77e5/18371682008.pdf
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/7eac30a9636e2c4f0d80b12dcbfa73c5/nuwidopoverezixisa.pdf
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160c85504d6621---vojexegewisebo.pdf
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/0a0e10b47ca16ee930653f33b04d193e/bajuravawego.pdf
    • http://tilestone-pools.com/i/File/kegaditixuj.pdf
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/85a3f7f2645f333804e1ff04c6f2dede/93514722519.pdf
    • https://eatorhours.org/e-bussiness/fckimages/file/75106327461.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca25.bin
de85734e6c1e3a220a08bbdce05e96b4339a48096705bf341a7ff0fc9063c68e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA25 17032 bytes
font_01_sfnt_off0000f692.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF692 16792 bytes
font_02_sfnt_off00010ea9.bin
bc2dba248f43a547b8bf55feb0fa1f470d270da2a30d442162344bcd9cd5a834		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA9 10704 bytes

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