Malicious PDF — malware analysis report

Static analysis result for SHA-256 50ee0530d69aa460…

MALICIOUS

PDF

83.4 KB Created: 2021-09-09 11:23:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: f74c9fff11f0936fc9df4bc6cb9fe914 SHA-1: b37c95848c96ca2eb432f44190202553c4031fc9 SHA-256: 50ee0530d69aa460e74a7205054736b42399c4e5d5a128e6467d0818c7aedf8d
146 Risk Score

Malware Insights

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

The PDF contains multiple external URIs, including one pointing to a raw IP address, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of numerous links and the PDF structure suggest it acts as a lure to external sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://tarzminder.com/resimler/files/menosokadununo.pdf In PDF document text
    • http://211.129.1.225/system/ckfinder/userfiles/files/niwajagevavakewela.pdfPDF link annotation
    • https://peoplesmodelinternational.com/ckfinder/userfiles/files/72160815665.pdfIn PDF document text
    • https://eastmangroupllc.net/ckfinder/userfiles/files/buvofugoxoregakikibejodi.pdfIn PDF document text
    • http://korealabels.com/ckfinder/userfiles/files/besakasole.pdfIn PDF document text
    • http://manenshop.com/upload/files/veduter.pdfIn PDF document text
    • http://ferramentabelleggia.it/public/file/buwojuraduvopewasapogiwa.pdfIn PDF document text
    • http://placc.info/up_image/17575309721.pdfIn PDF document text
    • https://barrier.exma.cl/ckfinder/userfiles/files/dexomexalipamelivexexoma.pdfIn PDF document text
    • http://www.vandiestbrandstoffen.be/uploads/files/24098282159.pdfIn PDF document text
    • http://eaupureinternational.com/userfiles/file/44377385812.pdfIn PDF document text
    • http://stuarteisbrucklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jodiz.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613184f245695---dejezipigod.pdfIn PDF document text
    • https://www.colline-eternelle.com/ckfinder/userfiles/files/44498373558.pdfIn PDF document text
    • https://whatproperty.ng/ckfinder/userfiles/files/guwodeguv.pdfIn PDF document text
    • https://mashura.co/userfiles/files/84413448931.pdfIn PDF document text
    • https://transturist.ba/ckeditor/ckfinder/files/files/28672735424.pdfIn PDF document text
    • http://trungtamdaykem.vn/Images_upload/files/16432825139.pdfIn PDF document text
    • https://mcdelandes.ca/uploads/file/76329718498.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613396379e536---71374950104.pdfIn PDF document text
    • http://votava2.altrodesign.eu/ckfinder/userfiles/files/74244464745.pdfIn PDF document text
    • http://renknh.com/ckupload/files/39610434802.pdfIn PDF document text
    • http://federicozucchettiarchitetto.eu/userfiles/files/71488296721.pdfIn PDF document text
    • http://ottomaniantextile.com/userfiles/file/60116436536.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=iptv+apk+crackedPDF 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_off0000e36b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE36B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fb82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB82 10088 bytes
SHA-256: 8a04d2f968730ba02ff0595cf5d450a2d9cb1da7582776e8b9aa609e7b3f672a
font_02_sfnt_off0001122f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1122F 17980 bytes
SHA-256: c455e7fbdeeabc1978e428bba3366c67619df92bee9efdf316ced26a1783d8bb