Malicious PDF — malware analysis report

Static analysis result for SHA-256 adabaebddd6c91e3…

MALICIOUS

PDF

68.1 KB Created: 2021-09-23 01:19:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 3dd8e6158665cc4c9bda25df93a0473e SHA-1: e44052cacaa6946f8e5475a6403ebe70c4ef9957 SHA-256: adabaebddd6c91e3ce6b3fc41dfa4c187f58f5444184a72609bd019113a9b736
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. The PDF also contains numerous external URIs, including one pointing to 'crewmak.ru', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://crewmak.ru/uplcv?utm_term=into+the+magic+shop+pdf+download PDF link annotation
    • http://viquadro.com/userfiles/files/76731495704.pdfIn PDF document text
    • https://nk-sostanj.si/files/file/rikutinatolepa.pdfIn PDF document text
    • http://easyhypermarket.com/userfiles/file/menig.pdfIn PDF document text
    • http://stringladies.cz/userfiles/39316276232.pdfIn PDF document text
    • http://computergramm.com/userfiles/file/konalaw.pdfIn PDF document text
    • http://nhakhoasaigonkimcuong.com/uploads/images/files/76980551388.pdfIn PDF document text
    • https://www.verimevzabavu.cz/ckfinder/userfiles/files/gijexuginawasanovopa.pdfIn PDF document text
    • http://sipsak.nl/userfiles/file/90165983981.pdfIn PDF document text
    • http://felixefontesadvogados.com.br/ckfinder/userfiles/files/risodejo.pdfIn PDF document text
    • https://mannoorpally.com/uploads/file/84935805683.pdfIn PDF document text
    • http://envisystem.com/upload/userfile/files/20017543994.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/2d79594589e4eb766ebb31c62f95e685/83337153634.pdfIn PDF document text
    • http://blgjad.com/upload/files/kikasasijevizibotuv.pdfIn PDF document text
    • https://orrizon.ru/images/file/vekerigopexu.pdfIn PDF document text
    • http://ibsdhc.hpds.work/ecdemo/web/js/ckfinder/files/files/xopobon.pdfIn PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613b2552b54ef---33226643692.pdfIn PDF document text
    • http://bacvietexpress.com/upload/userfiles/files/lavutidemojib.pdfIn PDF document text
    • https://www.creativetalentnetwork.com/ckfinder/userfiles/files/musisidaferetizadid.pdfIn PDF document text
    • https://juniorclublivorno.com/sitonews/images_upload/files/79767633017.pdfIn PDF document text
    • https://trieurodata.ro/images/file/47229086558.pdfIn PDF document text
    • http://termosystem.pl/userfiles/file/totaxidopinomemes.pdfIn PDF document text
    • http://dinobajka.pl/Upload/file/87600605355.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_off0000ae01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE01 14500 bytes
SHA-256: d1620ee32ca99bb4a8ae4e4b13df08654d9676ae2bc576262d78bacc95b6ac52
font_01_sfnt_off0000d1da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1DA 11004 bytes
SHA-256: 678a6bd803fc5309bf23468ee0b49762a1a74d778323e217ada62c4e5259729a
font_02_sfnt_off0000eb1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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