Malicious PDF — malware analysis report

Static analysis result for SHA-256 85baf9249cc60c3d…

MALICIOUS

PDF

38.9 KB Created: 2021-07-08 10:33:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 299e8fbc17d0b59b92062ab25af4da10 SHA-1: 0dc88068099df8599b9460017dd010a4491f85c8 SHA-256: 85baf9249cc60c3d2acf9dfcaef1c456731ba31cfa068a35f89a08800affa671
174 Risk Score

Malware Insights

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

The PDF contains a single image and minimal text, characteristic of a screenshot lure designed to trick users into clicking an embedded link. Multiple heuristics indicate the presence of link farms pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. ClamAV and ML classifiers also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8504

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 38 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://pomacanthe-art.fr/imagebeforeafter/files/41652637092.pdf
    • http://chikatere.com/Upload/files/xadowitofefimiraxuwuges.pdf
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/8004f9a07742cc0cf4756762be0c2dbd/xitatajir.pdf
    • https://iwnta.com/userfiles/file/wixamiwevipenererimuvul.pdf
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/04aaf671b00dc840113cfd10445f3a5f/88790966529.pdf
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/85a8f4277979c3c9494318ef3336a292/xafirivivokegetixegozob.pdf
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/3cc769b27221f1ebd8072d59e8e45128/32886837297.pdf
    • http://livingkaneohe.com/userimages/5971179897.pdf
    • https://korzayithalat.com/spot/admin/fckeditor/userfiles/file/pawexanefopixivi.pdf
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d7f836c8a4---pagefujajivoke.pdf
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c713f8ae50---99420996981.pdf
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160842e8c85cc8---89031738795.pdf
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609cc6d11a521---5656844312.pdf
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ace15746c34---xotabetum.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=crafting+benches+terraria

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