Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c421637a9c243c…

MALICIOUS

PDF

70.6 KB Created: 2021-09-26 02:35:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: ed33209fbda70332325da6cf8b640fe5 SHA-1: f7f09c42026951f0d0ed70e7ed9c8132019387f2 SHA-256: 06c421637a9c243cf3391e0f9a605f96b93d38e67b889d2f4e379d9c3b7e4d4e
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, many of which are associated with link farms and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially harmful content.

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 https://philabc.ru/uplcv?utm_term=hd+movie+download PDF link annotation
    • https://cornwallstaffagency.com/userfiles/file/72205231190.pdfIn PDF document text
    • http://sineadstone.com/userfiles/file/delesubo.pdfIn PDF document text
    • http://sweatrinserepeat.com/ckfinder/userfiles/files/22043163601.pdfIn PDF document text
    • http://dom-2000.ru/ckfinder/userfiles/files/xadevokubusire.pdfIn PDF document text
    • http://mfahk.com/upload/files/zonufijuropigunokokojeka.pdfIn PDF document text
    • http://sellmysayarah.com/userfiles/files/govopemoziditisuxed.pdfIn PDF document text
    • http://www.fd.ntou.edu.tw/ckfinder/userfiles/files/48852306670.pdfIn PDF document text
    • https://alibaba-cave.com/userfiles/file/pipikiregugibapajev.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/dc36c70612c88553c137155c057edf89/zakokavovitipazuxe.pdfIn PDF document text
    • https://coonvalleycc.com/userfiles/file/vidoxisaw.pdfIn PDF document text
    • http://gs-metals.com/filespath/files/20210913235501.pdfIn PDF document text
    • http://doanekeyes.com/userfiles/docs/kelimodutidusani.pdfIn PDF document text
    • https://ispartaprefabrik.com/ckfinder/upload/files/tixufofewojidetomid.pdfIn PDF document text
    • https://mediaskills.rs/files/xamatatuzire.pdfIn PDF document text
    • http://iucecb.com/files/file/worilevobusojefakajirole.pdfIn PDF document text
    • https://baruipur.org/ckfinder/userfiles/files/jisexuwagu.pdfIn PDF document text
    • http://cozycornerexpress.com/uploads/files/sunegozuxedona.pdfIn PDF document text
    • http://banhangcongnghe.com/upload/FCK/file/zetawafekubejoju.pdfIn PDF document text
    • https://zzwgjx.com/d/files/42764610349.pdfIn PDF document text
    • https://anakmeong.com/contents/files/zogitugen.pdfIn PDF document text
    • https://amoslodge10.org/ckfinder/userfiles/files/32915178611.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/cgdvnvfa7t1fr0no7n5cnphdi3/83557214464.pdfIn PDF document text
    • http://www.jobsincrete.gr/images/_user_na/file/pujapesenemijorigas.pdfIn PDF document text
    • https://fetogram.com/images/upload/files/70951788732.pdfIn PDF document text
    • http://bishnutoursandtravels.in/userfiles/file/debeluxuwezekakamomiwafan.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_off0000b4ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4ED 16220 bytes
SHA-256: 0fdf96c09f7b37790dbf58ef5af6c863e8de8202a48d08f2a7411d04a6565581
font_01_sfnt_off0000de12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE12 10184 bytes
SHA-256: 499a6b98be011c89d57fe343120e60cfc2d8b54e040bc28be4504d974d820703
font_02_sfnt_off0000f4c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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