Malicious PDF — malware analysis report

Static analysis result for SHA-256 e81b54fb7b482381…

MALICIOUS

PDF

50.3 KB Created: 2021-09-08 03:10:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 0cc750777bab98872ff3f813b0d6dc9b SHA-1: 8f26bc2bac544dedeff867001eeee5326329b3fb SHA-256: e81b54fb7b482381f07d02f43dc74beb78ab30208831f6042395d32f643336ed
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and ClamAV as malicious, indicating it is likely a phishing or malware distribution lure. The embedded URLs point to compromised websites, suggesting an attempt to redirect users to malicious content. The PDF structure and URL patterns are consistent with common phishing techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7685

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 https://oniceh.ru/uplcv?utm_term=bosch+oven+manual+nz PDF link annotation
    • https://www.westcountrystoves.co.uk/wp-content/plugins/super-forms/uploads/php/files/939905241f7731350d70da9028ae571e/lagebozawovisemogi.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc5cfc92eb---14221743347.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160909171b3db0---51193974348.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a27095db85a---gulobozirevipefi.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/2792d2ff8506900c402c13e8ec0bb49b/92515833024.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/9604c0fe55b70a6ba0cc5fc60a183cbd/jozilepoxurapaxel.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16073207a0a45b---11991345824.pdfIn PDF document text
    • http://nyett.hk/uploads/news/files/82107177633.pdfIn PDF document text
    • http://charugarware.com/DEVELOPMENT/charu_garware/uploaded/userfiles/file/78415302558.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/5i8tsjaeln1dverv811gnra221/5638502761.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be4cf0b605a---72480395145.pdfIn PDF document text
    • http://nage-z.com/ckfinder/userfiles/files/35349043194.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a48024127f9---49687187299.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160ae05dd865c3---20110496290.pdfIn PDF document text
    • http://sarlampa.ru/upload_picture/ratunakufufedata.pdfIn PDF document text
    • http://actlogistic.vn/upload/editor/files/wogarefalofifisedave.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608aba890aaed---87253517944.pdfIn PDF document text
    • http://eros-arena.de/eros/userfiles/file/vibumezodibonuvako.pdfIn PDF document text
    • http://tjsijiqing.com/ckfinder/userfiles/files/2021/0825/6cbfa8b045941a7f3c4d948937a14d5d.pdfIn PDF document text
    • http://rymwid-training.com/userfiles/file/80426080678.pdfIn PDF document text
    • https://peterdegendt.be/file/gikekaderitejejolokujone.pdfIn PDF document text
    • http://bugaboo-buffalo.eu/UserFiles/File/81377423647.pdfIn PDF document text
    • https://shian-jin.com/UserFiles/files/94945339740.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a88a40db948---12479787038.pdfIn PDF document text
    • https://asthasupermarket.com/userfiles/file/95473695248.pdfIn PDF document text
    • https://aquafilling.com/userfiles/file/jores.pdfIn PDF document text

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