Malicious PDF — malware analysis report

Static analysis result for SHA-256 867fed7e046a3a74…

MALICIOUS

PDF

60.9 KB Created: 2021-07-30 15:11:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 39d7547ff85b4299d30ef229ec67e816 SHA-1: 3fee59d357360e0e3296b94d868ed98a10fedbe7 SHA-256: 867fed7e046a3a74410666bedd8b3e85cb88617b9903e2b4a6afe7f2e960276b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous links pointing to websites that appear to be compromised CMS uploads, suggesting a phishing or malware distribution scheme. The ClamAV detection and ML classifier further indicate malicious intent. The document body is heavily obfuscated and does not provide clear instructions, but the presence of link farms on compromised sites strongly implies an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6935

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://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1d091b6b35---xifitof.pdf
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/di7c2bkd2mbv36nclft787iu25/budepefotepuvabaxuz.pdf
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e5f33095863---rimapemonetorawagi.pdf
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8a580bcc7---97032898560.pdf
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/pcf7m8qcnff3hbo93hhia5skra/romanerujijibe.pdf
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/84b2c0cdd1de24a07b87e24cdc87f712/faxobepagogopujopivar.pdf
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160cf52806e7de---22178652925.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c43156b9fbb---39468412452.pdf
    • http://www.bandungmesin.com/file/zokeligugi.pdf
    • https://ppuhperspektywa.pl/files/edytor/file/2783412223.pdf
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/f1a5ac4146f7cd2354b33d3a320bbb77/rutawajirozepu.pdf
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b27ef49194---38896743488.pdf
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/16098ae7d969d1---7694447439.pdf
    • http://sun-green.eu/ckfinder/userfiles/files/63218665858.pdf
    • https://www.oalysa.cz/ckfinder/userfiles/files/63948239394.pdf
    • http://mabo-meccanica.eu/userfiles/files/24028191612.pdf
    • http://c2ctrading.org/cms_upload/files/gapeselinevobodibaninap.pdf
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/8f15a9a73a422615b00d7cd432a6357b/97449087734.pdf
    • https://digbijoynath.in/iisc/ckfinder/uploads/userfiles/files/simebutawabutow.pdf
    • http://wolfroccatiassociati.it/userfiles/files/203432767.pdf
    • http://leilehua76.com/clients/4/4d/4d80c013f15dbe3c797666a457780dca/File/zebarat.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=preposition+worksheet+for+grade+6+with+answers

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