Malicious PDF — malware analysis report

Static analysis result for SHA-256 f084573e080fda76…

MALICIOUS

PDF

87.0 KB Created: 2021-09-14 13:21:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 2b3d9dbe263622286d5201a7f4871c9a SHA-1: eb7284f2d8cd02cbc101e4c30774cd4418aa715a SHA-256: f084573e080fda76313639cc1741b28e749650f73e64acc686f42dafd5da6814
126 Risk Score

Malware Insights

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

The sample is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs pointing to external sites, suggesting a phishing or redirection scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, indicating a link farm on disposable hosting, likely used to distribute malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://chcial.ru/uplcv?utm_term=pes+2020+on+ppsspp PDF link annotation
    • http://daiichilogistics.com/uploads/news_file/befudivas.pdfIn PDF document text
    • http://kayamedbursa.com/userfiles/file/buremofuxepokinemakireji.pdfIn PDF document text
    • http://itcbeautytrainingschool.com/userfiles/file/sujepago.pdfIn PDF document text
    • http://www.trackls.com/application/ckeditor/ckfinder/userfiles/files/21518285703.pdfIn PDF document text
    • http://bitree.net/ckfinder/userfiles/files/gijaxitejotozeg.pdfIn PDF document text
    • https://elsa-daulte.com/ckfinder/userfiles/files/20776681603.pdfIn PDF document text
    • http://philipwillettelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/67380156827.pdfIn PDF document text
    • http://appartementslisa.it/an3_Uploads/file/rasesakanegenoze.pdfIn PDF document text
    • http://eventclub.pl/userfiles/file/37512953953.pdfIn PDF document text
    • http://himalayakebab.com/shipinc/userfiles/files/28319876117.pdfIn PDF document text
    • https://073741256.com/uploads/files/202109061150302355.pdfIn PDF document text
    • http://www.farmaciabergua.com/userfiles/files/13519902471.pdfIn PDF document text
    • https://ssekolkata.com/ckfinder/userfiles/files/parakolo.pdfIn PDF document text
    • http://chanakyaaerospacedefence.com/userfiles/file/49496291664.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132c634613c2---mafetid.pdfIn PDF document text
    • http://ipllaser.in/uploads/73735143978.pdfIn PDF document text
    • http://shrlie.com/upload_fck/file/2021-9-11/20210911074634987696.pdfIn PDF document text
    • https://aglogistics-bo.net/userfiles/file/25335585224.pdfIn PDF document text
    • http://progettocecinacuore.it/writable/public/userfiles/file/patanavoguka.pdfIn PDF document text
    • http://panziofabian.hu/fck_kepek/jekofifadawujararusuja.pdfIn PDF document text
    • http://abwingsmd.com/uploads/files/govaxudi.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_off0000ede7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE7 19304 bytes
SHA-256: 7028d2bbed83ac944d30f19e60c784076c941d2797af5e8621e2c2909dda93c3
font_01_sfnt_off0001202f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1202F 9992 bytes
SHA-256: 31cb00e09fee7866923a016ce56b51af05d2fb8e2d5adbf0160f8f5e63065f13
font_02_sfnt_off0001367a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1367A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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