Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ce0c422c5ffaf05…

MALICIOUS

PDF

69.2 KB Created: 2021-09-30 12:01:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: e0fdb0177943c94f26228810915fdb8c SHA-1: 2d56a155b8e0ebfcf685bf874065a55b973ec2df SHA-256: 6ce0c422c5ffaf05a64e37580ea464be97ddbac8cdbd279b247b91670bca0850
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a high number of embedded URLs pointing to various domains, many of which are associated with link farms and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of techniques used to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=kodi+mod+apk+download PDF link annotation
    • http://nigerseedindia.com/uploads/76219972462.pdfIn PDF document text
    • http://hcwan.com/userfiles/file/3320990733.pdfIn PDF document text
    • http://falegnameriacastiglione.it/userfiles/files/26157556371.pdfIn PDF document text
    • http://tornyanggrace.com/upload/file/kuliburizodiwapazuz.pdfIn PDF document text
    • https://zhongzing.com/uploads/files/202109290150542777.pdfIn PDF document text
    • http://csim.jp/ckeditor/uploads/files/8642126334.pdfIn PDF document text
    • http://colleges-in-tamilnadu.com/FCKeditor/userfiles/file/ludutono.pdfIn PDF document text
    • http://aorganboys.handyfriendship.com/upload/files/buribakuxo.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/1c5524ff11622f68a7c0fffaa5efb0f4/worimejekopezudasananotib.pdfIn PDF document text
    • http://vlajamo.cz/images/file/33778700517.pdfIn PDF document text
    • http://www.atccs3.it/atccs3/fckeditor/editor/ckfinder/userfiles/files/76601311417.pdfIn PDF document text
    • http://patrick-vallot.com/upload/files/ritotiwuguwemixikaxivo.pdfIn PDF document text
    • http://dakov.hu/_user/file/fenuzif.pdfIn PDF document text
    • http://topstec.com/d/files/palonig.pdfIn PDF document text
    • https://milosislandrooms.gr/userfiles/file/15212622271.pdfIn PDF document text
    • http://taispacedesign.com/upload/files/39148010279.pdfIn PDF document text
    • http://jodhpurheritagewalk.com/images/file/nirenafekom.pdfIn PDF document text
    • http://malifer.hu/upload/file/94786949959.pdfIn PDF document text
    • http://speakingaboutnetworking.com/ckfinder/userfiles/files/fisede.pdfIn PDF document text
    • https://zenit-npk.ru/files/file/28240350349.pdfIn PDF document text
    • http://synowka.pl/galeria/file/61559107472.pdfIn PDF document text
    • http://heathrowairporttaxi.website/userfiles/file/doguwegesowagorib.pdfIn PDF document text
    • http://fujieshubao.com/zk/UploadFile/file/2021092917054773499.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_off0000af42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF42 16232 bytes
SHA-256: aeb507caea392b87e948c24e1a6c4b08de5d0188d317bb870ee1298bd336ee19
font_01_sfnt_off0000d828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD828 10224 bytes
SHA-256: 44340024d016f8c654526ea6df114d09ed1e29cef4fc2462069b008b2fd825b1
font_02_sfnt_off0000ef02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF02 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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