Malicious PDF — malware analysis report

Static analysis result for SHA-256 d746bb8226e3767e…

MALICIOUS

PDF

55.7 KB Created: 2021-05-17 01:51:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 065eca1ef6dba68242084f78afc03d6d SHA-1: c62803068e2901445f12c89ed2717fd38cce628f SHA-256: d746bb8226e3767ef21f08a710202722e121dd5e32cc146e3db34e657809db30
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier flagging indicate malicious intent. The embedded links likely serve to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7497

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/qvorci0uo6bk7p35q7nljoetc2/valusufit.pdf
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/0d86f46a88992d391865c020f4b098a8/rezixotobimovaxosusijo.pdf
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/ub3hmh8lh8th1gsl1fphbiohr2/wozazabe.pdf
    • https://aartipalette.com/userfiles/file/rijebodopuxudem.pdf
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/62d8886520ecb8271f35bf96ba7dda37/10445374592.pdf
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c9a318d266---1139939566.pdf
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/862def0a22e47d4e313eccba56656b03/rixagafenero.pdf
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609b50549b578---liwubeso.pdf
    • https://www.webplease.it/wp-content/plugins/super-forms/uploads/php/files/v915860te8apfl5rr4tllrdag0/18648818498.pdf
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606eda4889b4f---dafelekerot.pdf
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160718ddbcd0bd---vuzag.pdf
    • http://gymostrov.org/gymostrov/userfiles/file/finupidinowobokadujupijam.pdf
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/s1itrt9fg4n9t93meoev45g9bp/83625200523.pdf
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5bcf6df15---lulerafejuneraxaxuf.pdf
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/sfjkaklnc8bfaaug1omq1u56hq/51252562963.pdf
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/mptdp06622tlek73oudchrchgg/jogewujolemikosuxanem.pdf
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/73gik1bih07hulndm0nn6uofc6/30445544217.pdf
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/02c21d2994cedc194bf4f921b0f72ff9/54387060380.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=square+of+a+binomial+worksheet+pdf

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