Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bba082d0d1d9227…

MALICIOUS

PDF

84.4 KB Created: 2021-09-13 05:42:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: efa814b6883c516a63a7361ab6837965 SHA-1: 3b6d5a931e63611d5cbf76e7db63989cafe9e41e SHA-256: 0bba082d0d1d9227481dcdfd604a839bb29cc1ec0f90f37507776d071db344ae
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple compromised websites and disposable hosting domains, which is a common tactic for phishing or distributing further malware. The presence of external URIs and link farm heuristics strongly suggests an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://irlanc.ru/uplcv?utm_term=antutu+xiaomi+10t PDF link annotation
    • http://bndweb.nl/upload/files/69920414286.pdfIn PDF document text
    • http://bajajsports.com/userfiles/file/jivum.pdfIn PDF document text
    • http://ingegneriarossi.it/userfiles/files/dakarafudejabimozif.pdfIn PDF document text
    • http://status.cz/UserFiles/File/89638339674.pdfIn PDF document text
    • http://galerie45.com/userfiles/file/nawobetefajafuwo.pdfIn PDF document text
    • http://jun-travel.com/userfiles/file/zijopeko.pdfIn PDF document text
    • http://rentappli.com/tinymce/jscripts/tiny_mce/plugins/phpimage/phpimage/upload/images/file/16746819201.pdfIn PDF document text
    • http://centromp.it/userfiles/files/76078630690.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/1mdkpkbio71e3rbc6vbv7n2gn9/gebofirasazidasolesovez.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/2975d90213f88c7176935b9859f3c6cb/vasunulavepezotejakakur.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131705108bc3---12912800869.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613491db14888---66453451415.pdfIn PDF document text
    • https://magazinul-de-instalatii-sanitare.ro/app/webroot/files/userfiles/files/15107752213.pdfIn PDF document text
    • http://bhartiyambeohari.in/userfiles/file/50834415593.pdfIn PDF document text
    • https://patidarpalanpur.com/web/k/main_admin/ckfinder/userfiles/files/dokitubuwuf.pdfIn PDF document text
    • http://clubmaniacr.com/campannas/file/29743021734.pdfIn PDF document text
    • http://studiobardinisrl.com/userfiles/files/28263086837.pdfIn PDF document text
    • http://wxbeimei.cn/upload/ckimg/files/202109131007352470.pdfIn PDF document text
    • http://ephtour.com/FileData/ckfinder/files/20210907_7CAC19979E8E3780.pdfIn PDF document text
    • http://jongauger.com/userfiles/file/83258228368.pdfIn PDF document text
    • http://veterinariomauracotti.it/userfiles/files/50205381136.pdfIn PDF document text
    • http://dorisemitchell.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vowodidizom.pdfIn PDF document text
    • http://www.mattig-accounting.bg/fisiere/file/rofudidud.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_off0000e4ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4ED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD04 10180 bytes
SHA-256: 9f49122427d76dbc7ca3f584434822d54e0b443cdcefaef27397e598eb6c04b1
font_02_sfnt_off000113d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113D4 18596 bytes
SHA-256: 6588addb6f7cc7e8e562f81b095cbd7f33c88d54e93bedcd24d9a8f3eed1fbc5

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