Malicious PDF — malware analysis report

Static analysis result for SHA-256 63bf6bceafc31880…

MALICIOUS

PDF

44.3 KB Created: 2021-09-03 16:45:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 7dbdbef9b2518a23b3f58721fbaa1ec6 SHA-1: 457cb36d526906b995335ca839f5fcf97440d46d SHA-256: 63bf6bceafc31880eefb165cf23274536fb815313e51fc4618683b45b1e41537
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. It functions as a link farm, directing users to various external URLs hosted on compromised CMS uploads and disposable domains. The document's structure suggests it's an image-based lure, typical for phishing campaigns aiming to trick users into clicking through to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6809

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 44 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 https://oniceh.ru/uplcv?utm_term=bergson+creative+evolution+pdf PDF link annotation
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/4c948d1aa31335146eb90075f61895f7/41028672171.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073da3b54d57---gupoxoduxeniloti.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160dccd36d353d---dejusotuvupipuz.pdfIn PDF document text
    • http://sochi-riba.ru/ckfinder/userfiles/files/nusolukidodaxotemat.pdfIn PDF document text
    • https://wilocom.ro/ckfinder/userfiles/files/6960709581.pdfIn PDF document text
    • http://rspon.pl/images/wyswig_images/file/wuluxawotu.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/710tt0g1mp2sngj03iqi6rrs8p/41540407228.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/9e2f747c73c8632f2d9eeed3a411a491/1818152650.pdfIn PDF document text
    • https://espiber.cl/images/uploadedimages/file/zorerezoramapipivumupimu.pdfIn PDF document text
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/pijpjnpr0n9rq4bc27q1qvo2qg/vunuru.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ae9c04cd804---75358585975.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c560b7c9c4d---44216901237.pdfIn PDF document text
    • http://cathugo-yachts.de/res/wysiwyg/file/65129863328.pdfIn PDF document text
    • https://www.parquesanalbertohurtado.cl/ckfinder/userfiles/files/xujinixevuruvogosopog.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609e52392fc02---wiguwuzotez.pdfIn PDF document text
    • http://sparkpro.lv/content/file/vetaroxuzuxire.pdfIn PDF document text
    • https://cometgroupinternational.com/ckeditor/ckfinder/userfiles/files/busavozumaxazubetu.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a03054b5d---bekinotekovubeverovopewa.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/85c7ecfc75804981d23d657499585e62/29798954672.pdfIn PDF document text
    • http://nuuts.mn/uploads/assets/rutirexabib.pdfIn PDF document text
    • http://mt-filtration.com/uploaded/file/211781351860bc3a8bae94e.pdfIn PDF document text
    • http://holidayinntorino.com/userfiles/files/zuvogimupunenavojugozek.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16094858b578a1---18859263601.pdfIn PDF document text
    • http://flexa.cz/docs/file/dadogejomuletexemizuje.pdfIn PDF document text

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