Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccc792aa600eae36…

MALICIOUS

PDF

91.3 KB Created: 2021-07-12 17:10:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: aa740fed543630674e83c24cb966e5cc SHA-1: 1fe0d207403c42f788baf6899da8b23bbd910d7c SHA-256: ccc792aa600eae3602a9be7b5bf9f89518cff8273f041d6c7664b4e00bef0b2d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to compromised WordPress sites and other domains, suggesting it's part of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://crewmak.ru/uplcv?utm_term=android+phone+as+amiibo PDF link annotation
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/7588ou3sej15npf4649ckd1hn2/nugevema.pdfIn PDF document text
    • http://sumosushingrill.com/uploads/files/fibizeguzefulunarokevew.pdfIn PDF document text
    • https://vnnc.vn/img-hdmedia/files/rafixuvejutuvevet.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a27c882ed21---9973336730.pdfIn PDF document text
    • https://www.herewardcarpets.co.uk/wp-content/plugins/super-forms/uploads/php/files/oggful7knipd35bf9lrtab21ab/jizoruku.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/e0e850385bcfeb8251637e314d32ae64/62396583232.pdfIn PDF document text
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/a1d35bfb1fa1490051037b9cc4f169c8/gaxakinibemaviduj.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/xafidawune.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d26b3eecba0---37844056512.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160951fc09b21b---tokijolisolasizika.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d4bb700ad---biwevotegu.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/livagi.pdfIn PDF document text
    • http://logiccpacma.com/ckfinder/userfiles/files/58344933357.pdfIn PDF document text
    • http://bjzjygj.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/12432319478.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc9f74dc56---nozalon.pdfIn PDF document text
    • http://legendtec-eg.com/wp-content/plugins/super-forms/uploads/php/files/b4hom14kkv05ue68qthqgnin34/57803409167.pdfIn PDF document text
    • http://zubrcup.by/files/files/lelagimetokotegizu.pdfIn PDF document text
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/93f3c9a55b3f53129badfba1f8d8acfa/54776569847.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092449c5be1b---75180861042.pdfIn PDF document text
    • https://2acontractor.it/images/file/526366619.pdfIn PDF document text
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/90513e217ea3d9e4e85a94c3576bfca5/wasodesojigutedaparoxisov.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1609d91f4ec7a7---344345645.pdfIn PDF document text
    • https://btegypt.comfile/76109882481.pdfIn PDF document text
    • http://parkwaywest1974.com/clients/861606/File/dosebibevirukitagulagus.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4f6e1407cb---17835827230.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/720a7170c30a17c9114bd7b088c72fe8/8675869481.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_off000101f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F4 10632 bytes
SHA-256: 3cb4f9e9cfe6745b3470d9bd06fbaebbd674f148946383b846f8fee3ecd015f9
font_01_sfnt_off000119cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119CD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000131df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131DF 17464 bytes
SHA-256: 764860e12fca308eaa59697fae52c5bafe2caf8bc9330a8df91cb8788e1d1a2d

Open this report in the interactive analyzer, or submit your own file for analysis.