Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f1bcce7bf532b77…

MALICIOUS

PDF

109.3 KB Created: 2021-07-15 12:41:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: c3ce764288037db32ed2180e32cb2082 SHA-1: ac691a3967d2332a5f1591ce0a572c091c53b467 SHA-256: 4f1bcce7bf532b77411972cbf0255e1d2d9ee6160dcc8f84eabcf5b25cf28e17
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains numerous links pointing to compromised WordPress sites, likely serving as a link farm to distribute malicious content. The presence of these links suggests an attempt to redirect users to phishing or malware download pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5649

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://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7b8f6cd43---83748779311.pdf In PDF document text
    • http://xn--80age2amlc.xn--80adxhks/pics/images/file/xowepigodijadunexosesawir.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/mff4sncllu3hf5fg665uhr6ua1/3856238556.pdfIn PDF document text
    • http://mevlanaasm.com/resimler/files/10647600448.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/15151289177.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/07o33br58si9qvac6u529olhev/26244767707.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b780ccde179---ganasididulubuvixitan.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16094dd65f05a9---80458532228.pdfIn PDF document text
    • http://barudan.hk/UploadFile/file/20210621165310105.pdfIn PDF document text
    • http://kibbkw.com/uploads/file/nupusanomifon.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af921605315---13304905708.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e934a436639---bifabuwofafonedigefile.pdfIn PDF document text
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/fatulajezo.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f1ac6ef74f---79019004119.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c51b3668d54---kipavasurawajilujiv.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/64a60a3bb16b14eb6e51e36e5363d782/mijajipelevimoxid.pdfIn PDF document text
    • http://mpti.ru/userfiles/file/famime.pdfIn PDF document text
    • https://zivotzaokny.eu/res/file/dojam.pdfIn PDF document text
    • http://apogeeconsultancy.com/upload/files/57104708289.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/f00eda07ae58163ae8cad3bc95b2faa0/telugeteb.pdfIn PDF document text
    • http://riskhedgetech.com/uploaded/file/109331365660abf64eb7cf0.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=guess+the+sketch+onlinePDF link annotation

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