Malicious PDF — malware analysis report

Static analysis result for SHA-256 4324bae4700da789…

MALICIOUS

PDF

67.9 KB Created: 2021-09-11 17:07:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: d568ed506faaaf7fbd7c4f2c0e342aa7 SHA-1: 360991fd042ba52b7442f80db84c3493bf480c24 SHA-256: 4324bae4700da7898a4ffeff220c783cdb7d9e9c017bcda7a2a2126f2824ba2a
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, with one specifically pointing to a download link for 'grand theft auto vice city download free apk', suggesting a lure for potentially unwanted or malicious software. The PDF structure and the presence of external URIs indicate it's designed to redirect users to malicious sites, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7683

Heuristics 4

  • 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
  • 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://pixomot.ru/uplcv?utm_term=grand+theft+auto+vice+city+download+free+apk PDF link annotation
    • http://zeroseistudio.eu/userfiles/files/xumiditojexugoni.pdfIn PDF document text
    • https://toyotaautobody.com/ckfinder/userfiles/files/nariximinananasulasabeza.pdfIn PDF document text
    • http://cobe-ing.it/userfiles/files/58612473323.pdfIn PDF document text
    • http://kfnmsz.com/upfolder/e/files/20210906204813.pdfIn PDF document text
    • https://menu2uplus.com/images/file/kesipelavuvefegimugopimod.pdfIn PDF document text
    • https://nergizleryapi.com/image/files/wawemuj.pdfIn PDF document text
    • http://aias.pnu.ac.th/ckfinder/userfiles/files/6228048859.pdfIn PDF document text
    • http://halaljones.com/uploads/files/radejanagu.pdfIn PDF document text
    • http://www.niziointerior.pl/upload/file/gomiru.pdfIn PDF document text
    • http://laarakkers.com/ckfinder/userfiles/files/raveko.pdfIn PDF document text
    • http://ilkyoukais.com/Images/Media/files/31925667768.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16139cab2de366---37033998006.pdfIn PDF document text
    • http://kulturazebrak.cz/userfiles/49105304355.pdfIn PDF document text
    • https://sibservis.com/ckfinder/userfiles/files/52330167654.pdfIn PDF document text
    • https://bcm.es/files/galeria/files/soxuk.pdfIn PDF document text
    • https://barcelonacentremedic.cat/files/galeria/files/53058699647.pdfIn PDF document text
    • http://sewakendragroup.com/userfiles/file/nupodabeve.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/9c1a6c0b4a8e8ff3e25f43637b2181bf/43745616286.pdfIn PDF document text
    • https://mccartha-cobb.com/userfiles/files/gabogi.pdfIn PDF document text
    • https://bawaniint.com/ckfinder/userfiles/files/maparifikuw.pdfIn PDF document text
    • https://condominiovillage.com/userfiles/file/ruwurixirekodunetujitapa.pdfIn PDF document text
    • http://ferrogep99.hu/static/media/file/vivifumekumopatufaxosibug.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/bixusejumazudogen.pdfIn PDF document text
    • http://mamolenasnc.it/userfiles/files/vepaderudoxu.pdfIn PDF document text
    • http://chernogolovka.inhome360.ru/admin/ckfinder/userfiles/files/zetopofeduxozog.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC8B 17296 bytes
SHA-256: ffa2797888734f9dcb5265da3421222ea5b36e09c651345b1044b9496c63053b
font_01_sfnt_off0000f8d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1