Malicious PDF — malware analysis report

Static analysis result for SHA-256 054678b8ce712368…

MALICIOUS

PDF

74.6 KB Created: 2021-01-16 10:22:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5f487eb26b5a9236a2c2dbe035b1ecaf SHA-1: a3f23314d8e846f15b69648a2557574ac8ba5545 SHA-256: 054678b8ce71236864113034e776298cc541e37fbc780a163417dbbbf0b2a2fd
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a URL that appears to be a lure for downloading an APK. The ClamAV detection and ML classifier strongly indicate maliciousness. The document body, though heavily obfuscated, contains text related to 'mod apk download', reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/wb?keyword=yes%20that%20dress%20mod%20apk%20download PDF link annotation
    • https://site-1175287.mozfiles.com/files/1175287/sozix.pdfIn PDF document text
    • https://site-1176340.mozfiles.com/files/1176340/cousins_movie_songs_video.pdfIn PDF document text
    • https://site-1168233.mozfiles.com/files/1168233/easy_mini_bowling_3d_model.pdfIn PDF document text
    • https://site-1177968.mozfiles.com/files/1177968/kazopezufakuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tamobalasu/blue_background_vector.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/27803805810.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/63141350263.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/plate_load_test_report.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/3293615413.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/46891605914.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/muganabo.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/9175394220.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B7 5056 bytes
SHA-256: 31ee2e3a1722454e7ee3fe08ef062f294f4e9ef43b9fecd55dabcd715efbfbfe
font_01_sfnt_off0000e7ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CA 12688 bytes
SHA-256: 63bfdb4b7ca74643953d87d1b5f6c38efc85734131fec0c8db103378767c37d2
font_02_sfnt_off00010e54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E54 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3