Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1668eace6baadc…

MALICIOUS

PDF

43.7 KB Created: 2021-07-06 00:27:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: a91fc52a14d8adfb3f68efe3a8c408a4 SHA-1: 4bd011e7eb2f9f808bac5f6d75d0f97deb62afbb SHA-256: be1668eace6baadc1d1e0d9d76ff6528440549fd89989f7754a2841ddb4cfa82
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress upload directories. These links likely serve as lures for phishing attacks or to distribute further malware payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7749

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://crewmak.ru/uplcv?utm_term=free+policy+brief+template PDF link annotation
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/0b232c6b3916245878d2fbc18f41c83e/medibebetadogumapuxekej.pdfIn PDF document text
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/160724e77a899c---zavatowisoxabus.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/fe442c143c5744dd6b8429c94cd5542f/47620003991.pdfIn PDF document text
    • http://planbmedia.hu/files/vidoputibavebaxibukibejit.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607058642cd2e---95170946992.pdfIn PDF document text
    • http://wawabed.pl/uploads/userfiles/file/wexoduzore.pdfIn PDF document text
    • https://nenanhduong.vn/Upload/files/sotitofebokakowoterewan.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a3e5f3115---xixunoled.pdfIn PDF document text
    • http://fitviewer.biz/files/file/20804413423.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607840ee266c8---97084895087.pdfIn PDF document text
    • http://tuttotop.com/userfiles/files/37013690510.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/80e92d79e2bad2cbb7caab4bb35ca402/11644218451.pdfIn PDF document text
    • http://paynechapelduquesne.org/clients/9/9b/9b910c66cef3ae2d1bb1fd5804160a19/File/12178422567.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/mvp0r5g82r0ul40vg404mrv8m2/36062424859.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e5ad265f65---66497745246.pdfIn PDF document text
    • http://allnatureint.com/userfiles/file/xelaginezoxonub.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c84d927cfab---35749489569.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc3982c20da---5668108498.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/0vbsv3n6199prjrnjnp6es22fp/gidabawirisofev.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16083476c0ddbc---66856021702.pdfIn PDF document text
    • http://ydtmuhendislik.com/ckfinder/userfiles/files/kazodufuxabomox.pdfIn PDF document text
    • http://accu-chek-event.com/ckupload/files/11098160985.pdfIn PDF document text

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