Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d97e434b5a115c5…

MALICIOUS

PDF

88.5 KB Created: 2021-08-01 04:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 7c1a546c55c5485d34aa0c6adf08e4db SHA-1: 2d0acc3e18cbd633cc0425873bc5c432aa55768a SHA-256: 0d97e434b5a115c54eae512b068d67d18e7aff07663f8460ca1ef574cc6cba8c
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised websites, suggesting an attempt to redirect users to malicious content. The presence of these links and the overall detection indicate a likely phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://garglob.ru/uplcv?utm_term=how+much+does+a+case+580+backhoe+weigh PDF link annotation
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b44ad39531a---19482783045.pdfIn PDF document text
    • http://bandenplaats.nl/cmsimages/file/tuxosukifukanafoxigudosoz.pdfIn PDF document text
    • https://binarbaidrealestate.com/public_html/userfiles/file/gototititizuzafadugigedi.pdfIn PDF document text
    • http://rjbmachinery.com/d/files/40836871037.pdfIn PDF document text
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/01c4d85c66aefee0ecc3d2b36bf81c3e/63116884648.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160706af17b5a9---wedonugabupunefowaxadufes.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16076bc30e93db---83396506627.pdfIn PDF document text
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/430b17949aaa68f76ae10dfb60a8fa76/kaxobeso.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/59d4091b5623ea85184eec731e2c75f4/69306513079.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609a21989673f---57786373353.pdfIn PDF document text
    • http://goldenpeak.it/userfiles/files/wuxela.pdfIn PDF document text
    • http://cwesp.biz/upload/file/87221695280.pdfIn PDF document text
    • http://luckdidea.com/ckfinder/images_store/files/49710677484.pdfIn PDF document text
    • http://alfavs.eu/userfiles/file/95990991133.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/f192c6a9e9e8b2a75b2e68c37a013fe8/34595000075.pdfIn PDF document text
    • http://lowchens.org/userfiles/file/jevelujime.pdfIn PDF document text
    • http://valleypainclinic.org/userfiles/file/momotabafu.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160bdc716207c8---peferezamuzotidebinap.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/afe24573ea54017b8154107952b22dc3/rurevujovaxinadomi.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/ee9e88cade9248d20e2e071a1e44b54f/zofise.pdfIn PDF document text
    • https://stmarys-perthamboy.com/upload/File/95798885692.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/179d9dc3704c6efee1607b7fc08cd7ed/45667868079.pdfIn PDF document text
    • http://arci-mp.fr/admin/File/70561242114.pdfIn PDF document text
    • http://myredm.ru/uploads/file/movujenunuruwowobenamafe.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7aeb31ff0---pinusolu.pdfIn PDF document text
    • https://bahispesinde.com/gnc/veri/_files/judiz.pdfIn PDF document text
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f34e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34E 17504 bytes
SHA-256: b415170d0f21d1f125131456a52480a061f7ccf1714ec20c20e0893533150ea5
font_01_sfnt_off0001214e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1214E 11344 bytes
SHA-256: 4d09f387705aa40cdaee67f460aa8d21ebcd8d7afc892d4c85650979bd8d8b78
font_02_sfnt_off00013be4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BE4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1