Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0f661a882b6cd21…

MALICIOUS

PDF

83.3 KB Created: 2021-09-24 05:15:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 60283104573e2a7a8e25047caedb3f73 SHA-1: 1bbc990a6da87601d1f9cc768ecdbc2e5f65961f SHA-256: c0f661a882b6cd21de1ab93670ce3b020781fd5f9a97df6ac5e9153e075d687c
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or distributing further malware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically identifies the document's structure as a link farm on disposable hosting, reinforcing the phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://catamma.ru/uplcv?utm_term=xmovies8+cinema+movies+2020+download+video PDF link annotation
    • http://namadagaskare.ru/ckfinder/userfiles/files/baloxegajojavifu.pdfIn PDF document text
    • http://xn--b1afklwjc5g.xn--p1ai/ckfinder/userfiles/files/44676544179.pdfIn PDF document text
    • http://studioturina.com/userfiles/files/bonofadefu.pdfIn PDF document text
    • http://sure2trips.com/bot/ckfinder/uf/files/rejimojigex.pdfIn PDF document text
    • http://www.chatanakonci.cz/userfiles/file/nunatoronibeduzelawibov.pdfIn PDF document text
    • http://vicc.huh.hu/UserFiles/File/vedipobatupe.pdfIn PDF document text
    • http://jarauwerdaenzn.nl/userfiles/file/rodepik.pdfIn PDF document text
    • http://theartofdesign.nl/ckfinder/userfiles/files/gaxajumitogiwoxuvetumo.pdfIn PDF document text
    • https://bawaniint.com/ckfinder/userfiles/files/82630896630.pdfIn PDF document text
    • https://ww150006.linebot.net/upfile/files/20210911130735.pdfIn PDF document text
    • https://takarasushimn.com/userfiles/files/feluvabupikugefiteminen.pdfIn PDF document text
    • http://usateatop.com/_upload/files/xegonudiruko.pdfIn PDF document text
    • http://crm333.com/documentos/file/84318830613.pdfIn PDF document text
    • http://chothuexeninhbinh.net/data/dulieu/files/82332561464.pdfIn PDF document text
    • http://logo4you.dk/userfiles/file/sidovi.pdfIn PDF document text
    • https://koetec.com/home/~ptow/public_html/ckfinder/userfiles/files/nevef.pdfIn PDF document text
    • http://mitroc.com/userfiles/file/tanezawidev.pdfIn PDF document text
    • http://odessawa.com/userfiles/file/xezejibubur.pdfIn PDF document text
    • http://weddingdove.tw/uploads/files/202109050812006855.pdfIn PDF document text
    • http://traktorpulling.de/ablage/userfiles/files/xakowepufonegujafawi.pdfIn PDF document text
    • https://maribon.net/app/webroot/files/userfiles/files/84676808665.pdfIn PDF document text
    • https://universitecentrale.net/uploads/FCK_files/file/fusitugopalopapibadu.pdfIn PDF document text
    • http://ags-sib.ru/ckfinder/userfiles/files/sewosutukofa.pdfIn PDF document text
    • http://jcon-aps.dk/userfiles/file/takuligibojokitenib.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613833ba88557---sanirufafetix.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_off0000e0a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A1 10944 bytes
SHA-256: 31f66dca1ca77f1f01dd6f58155fa49b4d4f9723f069d174cd5e27fed94369d7
font_01_sfnt_off0000fa08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA08 17256 bytes
SHA-256: 76e7c03529b58042089f0cec17cc9efaecdb46f095730f8cf02d6a320d73444b
font_02_sfnt_off000126cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126CF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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