Malicious PDF — malware analysis report

Static analysis result for SHA-256 230cd5a096b619b9…

MALICIOUS

PDF

85.6 KB Created: 2021-09-18 00:34:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 9fd584c2df998ab7bd2d99d640b60d3a SHA-1: bf792e7be759fe10aa6c431ab99b5f171f671720 SHA-256: 230cd5a096b619b93e4c932cf0f550112b0ab74a479ed2dc228c36783410ee9e
126 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to malicious content or download further payloads. The PDF structure and embedded links are consistent with common phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://jnvhardoi.org/ckfinder/userfiles/files/36517437234.pdf In PDF document text
    • http://lnyuanzong.com/uploads/files/20210904185208.pdfIn PDF document text
    • http://vngo-cc.vn/cooker/public/files/dimokanefonukem.pdfIn PDF document text
    • http://alpes-de-haute-provence.proximeo.com/ckfinder/userfiles/files/91970285534.pdfIn PDF document text
    • http://cathugo-catamarans.de/res/wysiwyg/file/vudenadelomujupedevoraxix.pdfIn PDF document text
    • https://www.rapn.ru/ckfinder/userfiles/files/30354611849.pdfIn PDF document text
    • http://shriramashramps.org/userfiles/file/88881958227.pdfIn PDF document text
    • http://phukiendoxe.com/media/ftp/file/59964677040.pdfIn PDF document text
    • https://haysalon.com/public_html/userfiles/file/susizanijivabegemox.pdfIn PDF document text
    • https://kotypsy.pl/ckfinder/userfiles/files/32955730044.pdfIn PDF document text
    • http://elverum-revmatiker.no/images/file/53015506283.pdfIn PDF document text
    • http://3colorjazz.com/fckeditor/userfiles/image/31068428717.pdfIn PDF document text
    • https://el-tall.pl/pics/file/44949468597.pdfIn PDF document text
    • https://ximangcampha.vn/upload/files/dajunuraluk.pdfIn PDF document text
    • http://placc.info/up_image/28759794817.pdfIn PDF document text
    • https://nazrabilisim.com/calisma2/files/uploads/40651528360.pdfIn PDF document text
    • http://tnslib.net/userfiles/files/64518969450.pdfIn PDF document text
    • http://studiocinti.eu/userfiles/files/14857444144.pdfIn PDF document text
    • http://bkmarine.net/ckfinder/userfiles/files/1631804920.pdfIn PDF document text
    • http://motopujcovnateplice.cz/userfiles/file/zowaneziraliti.pdfIn PDF document text
    • http://mmsmarin.com/imgimage/file/93291926251.pdfIn PDF document text
    • http://tythb.cn/uploadfile/files/rulajugalezujusomena.pdfIn PDF document text
    • http://hong-tour.com/FileData/ckfinder/files/20210907_32CD8ABF3534FBAD.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=tubex+app+for+androidPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0D 10484 bytes
SHA-256: 5c33d05c5f20d3663c207453d88cd3cee50adcdccf037ed23e73b3a922a7b3eb
font_01_sfnt_off000104b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104B8 17064 bytes
SHA-256: 49471ad3ccfcddf075f42df5b6bbfe5358a23816344414816cbb382c0e585d46
font_02_sfnt_off000130d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130D2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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