Malicious PDF — malware analysis report

Static analysis result for SHA-256 8741b7dd7e284354…

MALICIOUS

PDF

67.5 KB Created: 2021-01-11 03:40:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e4518ad3dedd0b7e92051cd12d5b370a SHA-1: 9477d3865093fd2e25248ab9e4c3e66bb485b8e6 SHA-256: 8741b7dd7e28435473fc5e11085ba8b63517a5e6f181f6ab9b03598223a33606
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffking.ru/123?utm_term=the+meaning+of+marriage+timothy+keller+free+pdf PDF link annotation
    • https://site-1179601.mozfiles.com/files/1179601/mujobatupawimuxebeb.pdfIn PDF document text
    • https://site-1176433.mozfiles.com/files/1176433/land_of_doran_12_codes.pdfIn PDF document text
    • https://site-1177330.mozfiles.com/files/1177330/duwilepelafaxerez.pdfIn PDF document text
    • https://site-1185297.mozfiles.com/files/1185297/99929278534.pdfIn PDF document text
    • https://site-1176277.mozfiles.com/files/1176277/36370089002.pdfIn PDF document text
    • https://cdn.sqhk.co/kesokirow/idggibb/hello_kitty_carnival_theme.pdfIn PDF document text
    • https://cdn.sqhk.co/sirejeforox/c3ja1gd/xekabijiferoxexerudurodi.pdfIn PDF document text
    • https://site-1168265.mozfiles.com/files/1168265/fogalinapuletenex.pdfIn PDF document text
    • https://site-1171584.mozfiles.com/files/1171584/woturekapa.pdfIn PDF document text
    • https://site-1178683.mozfiles.com/files/1178683/apple_watch_text_message_sounds.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/luxelula/93828223372.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/tonawogil.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/corrugated_plastic_roofing_sheets_northern_ireland.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/boro_chele_song_free.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE4 5392 bytes
SHA-256: 9bf2d4d61b6252a85e309ec42450d6ed0d8c5d8575637820b882fcae04e1d41a
font_01_sfnt_off0000de1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1B 10444 bytes
SHA-256: 16d56b9c5edb5b9fa6740a5b2fed88188e1a1e27d5433b9009fa45a6b42d6db4