Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0bf79e518c973e4…

MALICIOUS

PDF

43.8 KB Created: 2021-07-17 12:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: 2d7c13ba4b1d63ca770d0a9cd13d3146 SHA-1: aa74bf6c0e7ff58565bac9c9107b4a67fd654446 SHA-256: c0bf79e518c973e49c663d9a2c1acc67bbb37971b71a45c9f2379d3a6378d617
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF exhibits characteristics of a phishing lure, including being image-heavy with a clickable action and containing numerous links to external websites hosted on compromised CMS platforms. The ClamAV detection and ML classifier further support its malicious nature. The file likely serves as a delivery mechanism for further malicious activity, such as credential harvesting or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7014

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 43 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://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c5da00ad324---8318364857.pdf In PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/m3kmtgupl4hbk2u4m7l5acvovn/84243518994.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077e5c4b43fd---xibaredubo.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c875b796c1---xafafuvu.pdfIn PDF document text
    • http://n2nnetworks.com/files/others/safivaluwonirex.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609bfbd65713a---larores.pdfIn PDF document text
    • https://fullgame.hu/uploads/files/69322126275.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/mi8mlmdsv9mooaser8nt23aq1n/44413584899.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8af356ec9---tugeva.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b31acbaa266---34555555754.pdfIn PDF document text
    • http://josephfellerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wevadogemumeli.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/1d3m6ihu9gsfuvphqofitla5gs/7180940961.pdfIn PDF document text
    • http://aitrans.org/UploadFile/file/F1202106161213323569.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3f5a145dab---zebajezakes.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/buwaruvibifuxepexufudig.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/dbfa9ssv8ti1mq8u5go3q74g61/89514187412.pdfIn PDF document text
    • https://www.truegridpaver.com/wp-content/plugins/super-forms/uploads/php/files/af11d3ecf9fb42e452fb3a67e0217f38/21184903895.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/gd64ssj29h0uftl1ldfnu39so2/tegasazutivonematum.pdfIn PDF document text
    • http://geriatriccarenewjersey.com/userfiles/files/lumugemaja.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2350375cb---70502444627.pdfIn PDF document text
    • http://bogelaipigeon.com/upload/file/85573024204.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/faaamiu86h1ir68b2iimki6633/litukerali.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/8327e24bdd94666752f26882df265586/fifemavagijegodonesov.pdfIn PDF document text
    • http://smartpaintingplus.com/userfiles/files/4406176429.pdfIn PDF document text
    • http://tuanlongland.com/upload/files/xajufo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=my+decision+makingPDF link annotation