Malicious PDF — malware analysis report

Static analysis result for SHA-256 07eac6497d2172bc…

MALICIOUS

PDF

96.6 KB Created: 2021-07-05 16:59:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 949a334e089a3843da08ea2fbf90da14 SHA-1: 1b1c575553c53663eab92d934e0b53e2cea140bb SHA-256: 07eac6497d2172bc1cbcda39200394ddd997b08a6c668430266114e21c89df61
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a phishing or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious content or downloads. No scripts were extracted, but the structure and URL patterns are consistent with phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9747

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://studioturina.com/userfiles/files/nuleveka.pdf In PDF document text
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/9160642af6ff8bf2d83f91022be10e3b/kigopoba.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609079c8132fc---kegixosomotexopoj.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608458eb132a9---85036194276.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085737dcdcb1---foxagurezupalikobiko.pdfIn PDF document text
    • http://cdseoulps.com/uploadfile/fckeditor/file/midutemimadexipopu.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160adc382dd8c0---38609386996.pdfIn PDF document text
    • http://jirehenl.com/userfiles/file/181353044639.pdfIn PDF document text
    • http://kingalbertltd.com/uploadedfiles/file/41198970305.pdfIn PDF document text
    • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/fa743aa985367c6a09afc3ff87a9c3e6/44858291212.pdfIn PDF document text
    • http://palcev.ru/userfiles/file/58811250159.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adac60f35e7---59266003972.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/33ea8e0787aa419608011eb74d697c82/mumamo.pdfIn PDF document text
    • http://findmealocalpainter.com/insurazon/admin/userfiles/file/sexoron.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/dd5a99248fc472e349bf55b9eb68c4a1/72829147606.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/37d2f36d86e44d02f7a5284dcd971c70/vusisefusabuvalakak.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/42a70fdacd6e4f317995e20cdad1808e/58921127946.pdfIn PDF document text
    • http://mail-ex.net/userfiles/file/68235799401.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160716937c6ddf---95539443958.pdfIn PDF document text
    • http://cmrivestimenti.com/userfiles/files/bejukalatubidom.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd4ef2c4a04---sijedafuve.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/48b6161a1319dc2c84331fd9a68e460b/xevakirisa.pdfIn PDF document text
    • http://agiusfuneraldirectors.com/files/file/45899733564.pdfIn PDF document text
    • http://robwalker.net/fckupload/file/95152646858.pdfIn PDF document text
    • https://bepxuyenviet.com/upload/files/siwexojodanuvawidovis.pdfIn PDF document text
    • https://www.varisistanbul.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073f1a744005---vimujabanurutalalufukutu.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6aef93afd---79698268380.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=the+witches+pathePDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f71f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F36 10152 bytes
SHA-256: 26f81784fbcd093d6ce33eb573daf0b5f95aeca7ca130ca90a90dc330bb347db
font_02_sfnt_off0001262a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1262A 11112 bytes
SHA-256: 12e9e2825ea2758ab887285a8c3f7a6f65d5b195371cd82c27b8ba6b11cd4a07
font_03_sfnt_off00014868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14868 16992 bytes
SHA-256: 7272558ec7441dab93ffa63ed8053bf031dbc30244cc82b30a85d31d11f6e7b1