Malicious PDF — malware analysis report

Static analysis result for SHA-256 c30a7ea1b839c600…

MALICIOUS

PDF

70.3 KB Created: 2021-08-07 08:02:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 3f20aa83a866f6af004e083ef6cb3777 SHA-1: c10c04039e91adfcb57e184b82a249d9d63f78eb SHA-256: c30a7ea1b839c600452d984549a00ce5a1fed32ccbbace68e77674be4f119226
194 Risk Score

Malware Insights

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

This PDF file exhibits malicious behavior by hosting numerous links that point to compromised WordPress sites and disposable domains, likely intended to distribute malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of multiple PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports the conclusion that this document is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/nr2sifas788om5nu5mmj6e3qe3/vetexat.pdf In PDF document text
    • https://tl-systems.hu/files/files/mobosalafasibi.pdfIn PDF document text
    • http://vinabomi.com/uploads/userfiles/file/32633226552.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8acecaa63e---sosoduwogaliwep.pdfIn PDF document text
    • https://p99.tw/pro_pic/files/26967595223.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160abd33ad3026---raliditifekoputepojuboxim.pdfIn PDF document text
    • https://harom.ro/files/file/32303230245.pdfIn PDF document text
    • http://reklama-kemerovo.ru/files/files/55766209978.pdfIn PDF document text
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/ed78fa81d00889fcae1ccae35d682bcd/33932771146.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/kugazuked.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076bd21e6f5a---33559140823.pdfIn PDF document text
    • https://abicecream.ru/ckfinder/userfiles/files/13506277813.pdfIn PDF document text
    • https://foodthings.us/userfiles/file/53720924595.pdfIn PDF document text
    • https://aquarell.ro/userfiles/file/41336285017.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb78759913---fulagobuvipuxamezep.pdfIn PDF document text
    • https://ambulatorioveterinariosismondi.eu/file/18933770456.pdfIn PDF document text
    • http://tuderprogettazione.it/userfiles/files/23791157499.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbd1fd28c9---vonabipukegevamimuzov.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/cfb002546613201e306738d706bc2248/lirokuruge.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f026dbae2f---14320274340.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/5699385363.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607630cedad75---15409615056.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/tf8mef60s0vh3f9014iqprju10/33470192995.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/bewivapazaramonekud.pdfIn PDF document text
    • http://densayhongngoai.com/uploads/userfiles/file/fewamitipipaxotof.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=download+novel+insurgent+terjemahan+bahasa+indonesia+pdfPDF link annotation

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