Malicious PDF — malware analysis report

Static analysis result for SHA-256 7287e3e1858cc4ec…

MALICIOUS

PDF

77.2 KB Created: 2021-09-05 00:07:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 09f68b1a5403b729897d3f8275c9c7fb SHA-1: eb5bf400593534a37a1b13f1d8205ccb3ea46c98 SHA-256: 7287e3e1858cc4ecfeb276214ef7c2c81fb722bf0abe2d8ca8cb057dc3359f72
156 Risk Score

Malware Insights

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

The PDF contains a link farm directing users to multiple external URLs, some hosted on compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or to serve further malicious content. The document body is unreadable binary data, providing no direct content-based clues.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://hilltoplancers1975.com/clients/13753/File/56232376691.pdf In PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608895cfc4c61---51786071309.pdfIn PDF document text
    • https://bibliothequedesarts.ch/ckfinder/userfiles/files/41233387797.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa0fb7671f6---22904319649.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16116ec09805ed---30200447136.pdfIn PDF document text
    • http://d4smontreal.com/clients/f/f5/f58105ca183540932673f5bf18e62671/File/kixavavezomina.pdfIn PDF document text
    • http://alrabbancapital.com/file/files/minikivotigojomewu.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/or57cao8suonlkvd3ha51ial26/57194016534.pdfIn PDF document text
    • http://itexpertdog.nwoasis.com/upload/files/parazowunomujerotedipevu.pdfIn PDF document text
    • https://universitecentrale.net/uploads/FCK_files/file/salileridadisun.pdfIn PDF document text
    • https://genegurumiraclehealer.com/userfiles/file/gaxapokofibopiw.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/vexodefeza.pdfIn PDF document text
    • https://growyourmoney.in/userfiles/files/36981480352.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/2tlp0lijf26mq1c62sohtg4b41/41994685825.pdfIn PDF document text
    • http://tindangnhadat.vn/upload/files/gokiwuvexulum.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607073e96adc7---29391610189.pdfIn PDF document text
    • http://lsneotek.com/ckupload/files/wunapo.pdfIn PDF document text
    • http://homelife-superstars.com/image/files/84264359290.pdfIn PDF document text
    • https://jv-cms.crazy-jessie.nl/uploads/files/zufafofapidave.pdfIn PDF document text
    • https://gelblighting.com/userfiles/files/99465190630.pdfIn PDF document text
    • http://xn----7sbicwad4afgcgd5aph7d5e.xn--p1ai/ckfinder/userfiles/files/37973527820.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f29de133776---lemapifukusikegu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=sinusitis+pediatria+pdf+2017PDF 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://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_off0000cc29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC29 16200 bytes
SHA-256: 7412c08b5c0edde4e7985a37ffc496ddecf2b04dc15c40720ec89e49ff819bb6
font_01_sfnt_off0000f5a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DC0 10844 bytes
SHA-256: 8e795cfd3ba7802dd18435dfaae68d82f01c3c18a869ccb97c19d2a76362ebeb

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