Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbe094c5a5fc091e…

MALICIOUS

PDF

76.6 KB Created: 2021-10-05 12:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 9129630b50974afe1c3ccad22510c1ca SHA-1: f03ef26c0376ca40cbc77e31d585b89427f4492c SHA-256: dbe094c5a5fc091e951bbed7fd19685038269e5ad9e171580be265325170cde7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a common malicious PDF tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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://garglob.ru/uplcv?utm_term=cheap+saks+king+of+queens PDF link annotation
    • http://3xlove.com/uploadfile/file/gunakapufawonuzuwajefig.pdfIn PDF document text
    • http://viquadro.com/userfiles/files/26243454814.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/649o093g1gmeeumkm2cm2jc5mu/lotamirisijalegawivewetog.pdfIn PDF document text
    • https://wspaperbag.com/userfiles/file/zaboma.pdfIn PDF document text
    • http://www.iuoelocal870.com/kaizen/ckfinder/userfiles/files/51041646728.pdfIn PDF document text
    • http://refah4ter.info/basefile/hotelrefah4terir/files/76592656199.pdfIn PDF document text
    • http://solarissoft.com/img/userfiles/files/duxin.pdfIn PDF document text
    • https://medarbindia.org/ckfinder/userfiles/files/64268763040.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a816918db5---57668704077.pdfIn PDF document text
    • http://xn--dlek-5qa.com/admin/UserFiles/file/ribewajilipezud.pdfIn PDF document text
    • https://tdfstore.it/file/pugafelupipivisiwap.pdfIn PDF document text
    • http://jongauger.com/userfiles/file/rizuwelatalediruvosu.pdfIn PDF document text
    • http://oembag.com/uploads/files/202109181307308383.pdfIn PDF document text
    • http://ardennes.proximeo.com/ckfinder/userfiles/files/17180000188.pdfIn PDF document text
    • http://pbpharm.com/upload/files/58407915947.pdfIn PDF document text
    • http://worldtrip-eng.total-flame.com/application/views/blog/userfiles/file/59394715147.pdfIn PDF document text
    • http://baby-daycare.com/uploads/files/202109180658213688.pdfIn PDF document text
    • https://xn--80aaijzh9b.xn--90ae/documents/file/48976843472.pdfIn PDF document text
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/16155dd5382851---tapakiv.pdfIn PDF document text
    • https://girl0229960192.com/upload/users/files/siguxesojowur.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/161557a62c6769---97463069535.pdfIn PDF document text
    • https://actorconseil.com/files/file/vewamosuduwusuma.pdfIn PDF document text
    • https://bellcera.60km.com/upload/files/63296342690.pdfIn PDF document text
    • http://partiaweb.com/upload/files/84223275477.pdfIn PDF document text
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/64ae91966e349780a5d89dcda5b99e02/lenagezisepilakoged.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_off0000c400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC400 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dc17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC17 10764 bytes
SHA-256: 5edd3b6ffa19d9a7c408eb6720965bc3db4b341745899706202084ec915667b6
font_02_sfnt_off0000f488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF488 18560 bytes
SHA-256: 23c6d93fb596a03f8f566e957ee96f84396a9353104a43f4290058715ff96068

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