Malicious PDF — malware analysis report

Static analysis result for SHA-256 d65ef4a7ab2fdc68…

MALICIOUS

PDF

62.4 KB Created: 2021-09-01 06:45:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 8a67934197f0a807fdd67de48db4cb64 SHA-1: 009699b90ebbd8cf789e37caa6ee29b7d2cf4f23 SHA-256: d65ef4a7ab2fdc687c425a8e9497f5d1c2f496f11c4136c0d0109a9706bd10e9
154 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics as a link farm and potentially malicious, with ClamAV detecting it as Pdf.Phishing.Trojan. The document body is heavily obfuscated and unreadable, but the presence of numerous links to potentially compromised WordPress sites suggests an attempt to redirect users to malicious content or phishing pages. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9244

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://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acd7c1dbb11---wotolafuzalulugunipolaz.pdf In PDF document text
    • https://taksis.lv/taksis/userfiles/file/80918568348.pdfIn PDF document text
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a977b206c83---56898727433.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/f51f02b2392c31a81f69cf2270dd6770/kewuzuxu.pdfIn PDF document text
    • http://suseefinance.com/userfiles/file/68498534366.pdfIn PDF document text
    • http://rexant.by/upload/editor/files/lutebejolukad.pdfIn PDF document text
    • http://djapm.com/userfiles/file/67812249869.pdfIn PDF document text
    • http://omak1968.com/clients/71178/File/tovoxuxelutusexulunal.pdfIn PDF document text
    • http://tianlanip.com/filespath/files/20210812024151.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/17542747302.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093a56b0072f---vesuvivipuw.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/e4c5m0gv7knspa71mgudd2rlg5/91476871215.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/f9478d9faf3155c5b35422188d826c74/89810060045.pdfIn PDF document text
    • https://htapigroup3.com/contents//files/jatubadiw.pdfIn PDF document text
    • http://andrelandberg.com/userfiles/file/sabekufomusinogapakixuke.pdfIn PDF document text
    • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f495382959---jutepuwitaselo.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/hm2gl4695709ta7om54o3mk676/zuvoxabizaralajupedajon.pdfIn PDF document text
    • https://tempegaring.com/contents/files/51623707287.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2f628e1a80---23181937834.pdfIn PDF document text
    • http://teplospectr.ru/images/files/49151354112.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160730c6ba4521---99243731647.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/755005102d906327e62e8544546ba156/gogitevabijama.pdfIn PDF document text
    • http://b-solutions.net/userfiles/file/naxexarogok.pdfIn PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160ab87b3d3a92---polarilefudifaneruba.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/160e235e87669d---dedosujizimusinu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=quotation+of+happy+new+yearPDF link annotation

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