Malicious PDF — malware analysis report

Static analysis result for SHA-256 d325c9fcb5ea285b…

MALICIOUS

PDF

80.1 KB Created: 2021-09-17 07:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6dd1dba519b97a6f24a93e4312a1e5b8 SHA-1: 0fe772d565d5945f358448767d8975f7abbc964e SHA-256: d325c9fcb5ea285b08c23b9d20104d5f5d96cb6c79f096e7435fe7cf62cc8b81
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting. Heuristics indicate this is a link farm designed to redirect users, with one URL specifically mentioning a 'projection mapping app android' which could be a lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://oniceh.ru/uplcv?utm_term=projection+mapping+app+android PDF link annotation
    • http://www.malagatour.es/ckfinder/userfiles/files/zulaxezaweboninefubapu.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/7730ed076a583b0de3c633db526d2c19/gogeg.pdfIn PDF document text
    • http://pravkniga.ru/files/userfiles/files/zekisutuzowo.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613277af14653---92605660686.pdfIn PDF document text
    • https://andana.us/files/files/65953448169.pdfIn PDF document text
    • https://www.cylinder96.ru/admin/ckfinder/userfiles/files/zitazurodizujaxebakore.pdfIn PDF document text
    • http://mindennapi.hu/upload/file/tikezonem.pdfIn PDF document text
    • http://shopsuathientu.com/uploads/userfiles/file/88863449451.pdfIn PDF document text
    • https://absoluteanytime.com/media_file/files/files/56960772676.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/f5da6cc14ad8e533508477888cd2103f/judakidexumakiriponesamo.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161435aa28f143---kirew.pdfIn PDF document text
    • https://partroyfuneralhome.com/partroy/assets/file/80725181476.pdfIn PDF document text
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/161345d1bd8310---97058888906.pdfIn PDF document text
    • http://whitedwarf.ru/public/images/ckfinder/files/poburawiwanamolizigan.pdfIn PDF document text
    • http://ariogalospspc.lt/userfiles/file/ladavapuzobapawubike.pdfIn PDF document text
    • http://tokyoracing.hu/userfiles/file/fojupawutenolixa.pdfIn PDF document text
    • http://eegbiofeedback-leszno.pl/userfiles/file/96207811185.pdfIn PDF document text
    • http://think6.net/ckfinder/userfiles/files/20210909005048.pdfIn PDF document text
    • http://kondicionery-domodedovo.ru/upload_picture/file/xotugiro.pdfIn PDF document text
    • http://location-appartement-venise.com/italie_documents/files/18851411495.pdfIn PDF document text
    • https://ozsersogutma.com/upload/files/41946796423.pdfIn PDF document text
    • http://scsytech.com/upload/files/wukodafofilujemosi.pdfIn PDF document text
    • http://synerfreight.com/syner_upload/images/files/91757546024.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/qaq5utf8t7vm1s0c8dho3vaij5/14740395059.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_off0000d596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD596 10776 bytes
SHA-256: e95a7b0cb64fc4d41f36fc000a3d55cf43957833420cd2d7b3517cef31f6329c
font_01_sfnt_off0000ee1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001062e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1062E 17380 bytes
SHA-256: 9159f921bd98708aa02d89aba6da32586c22c76f23c42d7f153b535e57ed22f1

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