Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d0ff1f4fcc8720…

MALICIOUS

PDF

95.2 KB Created: 2021-06-21 10:55:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 04ff4d83a24e7c75b5de700daf010759 SHA-1: 9ee8591d35f834e7f44624dbccdac1ce48461a7f SHA-256: 32d0ff1f4fcc8720ae74510ede06fd1e572bfe432128d636c6487175c5c51184
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. The heuristics indicate it functions as a link farm, containing numerous URLs pointing to compromised CMS upload storage and disposable hosting. These links are likely intended to redirect users to malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1606c77dd569a4---tisovegaxobutinuwuniful.pdf In PDF document text
    • http://muslimofwestbengal.com/mwb/editor_upload/files/45286389168.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609dabc65d51c---80442158434.pdfIn PDF document text
    • https://oversaslogistica.it/file/lumabezawuxugifutipa.pdfIn PDF document text
    • http://slbreakingnews.com/ckfinder/userfiles/files/vaxigorexomebapevisulap.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071d25becdc4---37259814543.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/hnhdigjeeh561p63nh74t2mpir/verir.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/2396d12e02480c3cc158f9ffa809a064/71248191359.pdfIn PDF document text
    • http://france-ex.com/images/blog//file/39607818322.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/28db35od95vngjtfikeld9pf3o/xiloxagezulexil.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b95c859fb8a---vipik.pdfIn PDF document text
    • http://digitalpolicycouncil.com/imagenes/file/96549731536.pdfIn PDF document text
    • http://chronocertif.com/userfiles/file/zelazikivilajegodarure.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608c57cf0d7e2---dejiveposirak.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608baf651c00e---27169144669.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609142ee58e17---medigazedewi.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba45472c94---bipajebixelokukakij.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=explorer+map+ark+islandPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F55 5952 bytes
SHA-256: f379c739835dd96a3f2415c906e5b87bbd899c1fbcdbf669674b4c85a2e228e8
font_01_sfnt_off000123e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123E7 4904 bytes
SHA-256: 7cf81f6ece188cd3fedd9c03122fdeccf54e8b7dfe79546b6ea095dbdd964da9
font_02_sfnt_off00013467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13467 13452 bytes
SHA-256: ccda19472ed34ef0db160493c19a8581e8fd03c530bd592fceefc6a08c1c636f
font_03_sfnt_off00015fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FD5 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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