Malicious PDF — malware analysis report

Static analysis result for SHA-256 48c309e3c0ffcb24…

MALICIOUS

PDF

77.3 KB Created: 2021-09-18 02:21:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: e9822f00f8dc837c015830483b0d6fe0 SHA-1: 98e47b044a62ea5d22480260f543eb8be4230abe SHA-256: 48c309e3c0ffcb249d86e558f995797d44eb323fabf840b8f7c198b42f9956da
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to suspicious domains and file hosting locations, indicative of a link farm designed to distribute further malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are consistent with a malicious PDF dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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 http://mannadey.in/FCKeditor/file/lidelubimimenipiz.pdf In PDF document text
    • https://anitacalderon.com/ckfinder/userfiles/files/14399794741.pdfIn PDF document text
    • https://2-view.org/home/view/public_html/ckfinder/userfiles/files/pazutirul.pdfIn PDF document text
    • https://lsv-wittlage.de/ckfinder/userfiles/files/wedoludununixi.pdfIn PDF document text
    • http://nedvizhimost-v-sharm-el-sheikhe.ru/uploads/files/jewunegom.pdfIn PDF document text
    • http://okvin.org/userfiles/file/zuwarebibuj.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/161450fa2d1eab---12482484639.pdfIn PDF document text
    • https://snoman.mb.ca/ckfinder/userfiles/files/fuliroxonasojatokeku.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files/1562130705.pdfIn PDF document text
    • http://iraneto.com/basefile/iranetocom/files/93876996448.pdfIn PDF document text
    • http://paron-rebondir.com/uploads/files/gamewowizodipagaz.pdfIn PDF document text
    • https://dildendilecevirievi.com/upload/ckfinder/files/31471761332.pdfIn PDF document text
    • https://vnnc.vn/img-hdmedia/files/wazefunotanifuledoz.pdfIn PDF document text
    • http://pacemakerpressintl.com/uploads/assets/file/63260582449.pdfIn PDF document text
    • http://parentini.it/userfiles/files/misemazoxetadigo.pdfIn PDF document text
    • http://xn--elementy-zczne-kwb98g.pl/media/file/86783585297.pdfIn PDF document text
    • https://globalmediaminds.com/uploads/files/xemerusakebodavenamevixum.pdfIn PDF document text
    • http://ecohort.com/userfiles/files/zunepamixururus.pdfIn PDF document text
    • http://craft-personal.de/userfiles/file/80343790583.pdfIn PDF document text
    • https://kenkochaya.com/user_data/ckfinder/files/variputulonudaku.pdfIn PDF document text
    • http://oris-am.com/editor_up/19247989739.pdfIn PDF document text
    • http://asiadomainstore.com/userfiles/file/28597577928.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=share+xender+to+other+phonePDF 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_off0000c7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFB 18532 bytes
SHA-256: df5efda2c92150896159a80d5f4af6394a888efa6e8f8aff7c2791e3026d1a12
font_02_sfnt_off0001108d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1108D 10360 bytes
SHA-256: 17515d1993433b83353fa6466c7077670ee3c7fe3b83575ff7ce8258bed48858

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