Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f2125501ebd3703…

MALICIOUS

PDF

79.1 KB Created: 2021-09-19 18:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 22a2dd6c9c15a18eb630fa54707a46ca SHA-1: c74b96c050f356e5b6d76973113c270260f639c0 SHA-256: 2f2125501ebd370389f8188ed33278c61c9cd047956544e9f89148f454b34cd8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with a phishing lure or a downloader for a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://www.mueblesgamez.com/ckfinder/userfiles/files/zudezuzobafawu.pdf In PDF document text
    • https://chsins.tw/uploads/files/202109181016204038.pdfIn PDF document text
    • https://adeptos.clevercloud.pt/images/items/files/pikefufigemaminazef.pdfIn PDF document text
    • http://abwingscolley.com/uploads/files/81550027169.pdfIn PDF document text
    • http://www.dgtrans.co.th/login/ckfinder/userfiles/files/99026623564.pdfIn PDF document text
    • http://polyalpan.hu/_user/file/73328255442.pdfIn PDF document text
    • http://jjsgreatescape.com/uploaded_files/userfiles/files/22363392773.pdfIn PDF document text
    • http://lse.hu/userfiles/file/dusomex.pdfIn PDF document text
    • http://safeabortionnepal.com/userfiles/file/56352045399.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613237870dc9b---97346806686.pdfIn PDF document text
    • https://dianthusindustrial.com/resimler/files/xexumofipomawu.pdfIn PDF document text
    • http://ondrejkocar.cz/img/file/34145525969.pdfIn PDF document text
    • https://toppelletmachine.com/d/files/numonurigekenutas.pdfIn PDF document text
    • http://dagmar-e.de/userfiles/file/96257887545.pdfIn PDF document text
    • https://hunglivet.com/uploads/files/202109170429415886.pdfIn PDF document text
    • http://atlas-consulting.ro/fckeditor/fisiere/file/kesuwuganewobuza.pdfIn PDF document text
    • https://diarch.in/WYSIWYGImage/file/sefunixawivil.pdfIn PDF document text
    • http://copy-office.it/userfiles/file/86985635742.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/161383b1279b46---97837533800.pdfIn PDF document text
    • https://cyklo-wellness-penzion-palice.cz/content/52486097714.pdfIn PDF document text
    • https://tyeetomsfishing.com/userfiles/file/15268551041.pdfIn PDF document text
    • http://wernersuarez.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/35379313326.pdfIn PDF document text
    • http://mygotour.com/FileData/ckfinder/files/20210908_42FA8C885AF83894.pdfIn PDF document text
    • https://infotechb2blite.com/bot/ckfinder/uf/files/73666461394.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=civilization+6+mod+apkPDF 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_off0000d236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD236 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ea48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA48 17016 bytes
SHA-256: 8020dd83b19049c9e204e6bf42c32ade8f1ac5bae252b4c9fd874ca000934072
font_02_sfnt_off00011679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11679 10572 bytes
SHA-256: 97ce23fcabca307274c8edaf06d3cdcd3788cc0fccef4d14f86fcb39f53b6ed4

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