Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d483331ffcd1359…

MALICIOUS

PDF

40.0 KB Created: 2021-08-09 00:46:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 0fc321b9504aa976deeca0a91406083a SHA-1: 38f888339606d248f0bf85966f7c25514abf9320 SHA-256: 7d483331ffcd13596ae0a7d827abc8b5da7b5ac790837cfea5bb6850878256f2
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF is identified as a phishing lure due to its structure, containing an image designed to trick users into clicking a link. Multiple heuristics indicate it's a link farm pointing to compromised CMS uploads and disposable hosting. The embedded URLs lead to external sites, suggesting an attempt to redirect the user to a malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8821

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 40 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://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c219e197faa---fasalopebuzu.pdf In PDF document text
    • http://suachuathietbi.com/upload/files/14644966379.pdfIn PDF document text
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/160823fd56799b---reviketa.pdfIn PDF document text
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/8d360d8bb6da2669ea1f50e2dfd88024/rebezokire.pdfIn PDF document text
    • https://dimensioninteractive.com/WYSIWYGImage/file/24223242215.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ba56a5e618d---narenonafudezaxusifavinep.pdfIn PDF document text
    • https://papiratisk.cz/soubory/suzudorunulefubekoro.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608f0405f1f15---50626862055.pdfIn PDF document text
    • http://detskaoptika.cz/ckfinder/userfiles/files/57157423726.pdfIn PDF document text
    • http://budohurtsa.pl/userfiles/file/retabedegaru.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/bc75c8ef47ec6d8b3e8367f5ec1f238d/gizepegafiguwovu.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/462ecbf6d906a1681554066cb57b12ec/nababofezowezut.pdfIn PDF document text
    • https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/1828f5aaa44634999d6d706240d044a0/71009655707.pdfIn PDF document text
    • https://fenicia.uy/fenicia.com.uy/uploads/files/momejanet.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca88448500---sageberelixol.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609411de5ec38---begusomafemesaj.pdfIn PDF document text
    • http://mg001.cn/upload_fck/file/2021-5-22/20210522233632762764.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9a1d6f0110--In PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=descargar+corel+draw+x5+portable+32+bitsPDF link annotation

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