Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d9e8cb0a7bbe381…

MALICIOUS

PDF

65.6 KB Created: 2021-09-06 23:58:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 84680f74f02675b5afb55c855fea512f SHA-1: 63c3edb356844d933c925797e1dc9273d5f8b60e SHA-256: 8d9e8cb0a7bbe381b333964fc6fbe0d4b508769249f3a40d594229aa35dcf266
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites and disposable domains, indicating a link farm designed to redirect users. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely for phishing or distributing further malware. The file's structure and URL distribution suggest it's part of a campaign to lure victims through malicious links.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4667

Heuristics 5

  • 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.
  • 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.binghan.my/userfiles/file/movojuvesanoxakurutawuber.pdf In PDF document text
    • http://mientrungpetrohotel.com/users/files/22562541046.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6ba1cdf2d---93805481459.pdfIn PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/3314abc883edc80fcb610ea203a0689d/66722355964.pdfIn PDF document text
    • http://ascensionchina.com/userfiles/file/267902250.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160f04b30809a7---vopisiponivofokirubaluz.pdfIn PDF document text
    • http://learnersdigest.org/userfiles/file/62196566211.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610e9e4e3ea58---87010308312.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3558b68916---pasab.pdfIn PDF document text
    • https://xlspandoek.nl/userfiles/file/37211351197.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16071c5c0b3aad---xuxogenin.pdfIn PDF document text
    • http://st-johnson.com/Uploadfiles/files/vesajonuxekezufagisagid.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c189553694b---16091733892.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/pigevewazenimewibomopup.pdfIn PDF document text
    • http://cementfeet.com/userfiles/file/jovegovekax.pdfIn PDF document text
    • http://primaneighbors.com/userimages/daxumalutiwuge.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/97973123231.pdfIn PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/q62hbm9gs2n0nn6s27buq05s43/pizimexejeko.pdfIn PDF document text
    • https://corghialberti.it/file/7160059927.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ua8d6se2mvac22a2c1441ii777/noneki.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607f7a3b6de64---30452885818.pdfIn PDF document text
    • http://grupopiscis.com/upload/files/2538432721.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160a1166b3dbb2---rugug.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5735c4e4b---48267208905.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/be095a3e1d98b0f313b89fb9b56febb2/rowewoke.pdfIn PDF document text
    • http://edwardfmcgintypa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/20382185379.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=eustachian+tube+dysfunction+patient+pdfPDF link annotation

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