Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ea76e3385394683…

MALICIOUS

PDF

90.9 KB Created: 2021-02-21 09:43:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cc0fb1e1a05c6400c6f4b427c9e7cb5f SHA-1: 07003384efb87f9ae4cf7cad9c54545ddd68847d SHA-256: 0ea76e33853946833ce50025279d89e72c17b82855073673314f629a92aebed4
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/strik?utm_term=descargar+iso+22000+versi%25C3%25B3n+2018+pdf+espa%25C3%25B1ol PDF link annotation
    • https://tudegikugil.weebly.com/uploads/1/3/5/3/135317618/wemerivoforotu-difeke.pdfIn PDF document text
    • https://vofitikasu.weebly.com/uploads/1/3/1/8/131871658/751286.pdfIn PDF document text
    • https://kesakoti.weebly.com/uploads/1/3/1/0/131070149/jufigogu.pdfIn PDF document text
    • https://cdn.sqhk.co/tinipuded/iieYTih/how_to_play_wasd_among_us_on_chromebook.pdfIn PDF document text
    • https://nekitunanozot.weebly.com/uploads/1/3/5/3/135346928/965f9e.pdfIn PDF document text
    • https://cdn.sqhk.co/lemisobe/gCGijY0/76894313854.pdfIn PDF document text
    • https://tunawirivam.weebly.com/uploads/1/3/1/4/131437064/66b123c306.pdfIn PDF document text
    • https://jubekufolofifi.weebly.com/uploads/1/3/4/5/134593927/najijupesuviwal_dugosozi.pdfIn PDF document text
    • https://cdn.sqhk.co/mixasuwekov/hejgnha/cartelera_cinemark_ecuador_latacunga.pdfIn PDF document text
    • https://buzixigadojaw.weebly.com/uploads/1/3/5/3/135316262/ruputaviloja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/bhagat_singh_hd_wallpapers.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/38872485411.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/mufedemarazetarusubizif.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/51004565667.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/jexafebogobageboduxogaxil.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/characteristics_of_aves.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/10069814316.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/ajay_atul_ganpati_songs_list.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB9 6252 bytes
SHA-256: 07036728ecf9f17e7e4d483be519724ec88ff4d74fcc51e1d0598decd04644ba
font_01_sfnt_off000134aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134AA 12160 bytes
SHA-256: eec0b710fe55ce1bce350676b091695bb0c999b24541ee823ab6e2bf5cfba80f

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