Malicious PDF — malware analysis report

Static analysis result for SHA-256 2464db43434b4f93…

MALICIOUS

PDF

41.5 KB Created: 2021-09-03 19:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 5340ce8fdc0b72742f9da609b05166c0 SHA-1: 59746f9b49825fe70cce68cb3bdc749d1fef5128 SHA-256: 2464db43434b4f9354698512dbb629a3e1041486c103ea57cf5456d8e2a57348
174 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a phishing lure, including being image-heavy with a clickable action and containing numerous links to potentially compromised websites. The ClamAV detection and ML classifier further support its malicious nature. The presence of multiple external URIs, many hosted on disposable domains or compromised CMS uploads, indicates an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7627

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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
  • 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://urdu-hadith.com/survey/userfiles/files/50957634228.pdf In PDF document text
    • http://castrolmintabolt.hu/images/upload/file/85144008820.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/wimabegunosikavetigo.pdfIn PDF document text
    • http://art-wonders.com/ckeditor/ckfinder/core/connector/php/uploads/files/54237197655.pdfIn PDF document text
    • http://rajskiewakacje.pl/userfiles/file/gotokuzomujebewufode.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608866197d624---xokup.pdfIn PDF document text
    • http://kuppersbusch-center.ru/uploads/files/31740617866.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/91f457ea27d8b20e7f08a78577a82d16/78548820457.pdfIn PDF document text
    • https://northcoteplaza.com/userfiles/file/83335535719.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/3661fd5445b3d1a51527af538137d521/85603739408.pdfIn PDF document text
    • http://nitecoreromania.ro/files/file/sotezidi.pdfIn PDF document text
    • http://yomamasushitogo.com/uploads/files/voxaguvitogotus.pdfIn PDF document text
    • http://location-venise.com/italie_documents/files/siriduna.pdfIn PDF document text
    • https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/990a1e584ddd37594202e015de400d2f/xajapatomerod.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608189612991c---56270934759.pdfIn PDF document text
    • http://evevoyance.fr/adh/.-/file/55849849574.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/99175785680.pdfIn PDF document text
    • http://phrabat.net/UserFiles/File/22144690610.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a8986d871c9---73843599731.pdfIn PDF document text
    • http://marmaraisg.com/images_upload/files/91445294740.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/sk85jgve3b2b9joocvm836m9fo/tixewawulabo.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/xevabewuwomuvizanizatowev.pdfIn PDF document text
    • https://almuhja.net/ckfinder/userfiles/files/35391870252.pdfIn PDF document text
    • https://namratalakhotia.com/userfiles/files/mibazafadeterorowamol.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/mjdnb0sj38rvugj0goab5nni57/11938576201.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/pIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=discourse+analysis+paper+pdfPDF link annotation

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