Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ca294d5708ab621…

MALICIOUS

PDF

75.9 KB Created: 2020-12-27 20:10:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0bf8b164e79f571f32953b517edd5dc5 SHA-1: ec87cef8349b7c1b189d36849d2d3f9061b15d6f SHA-256: 2ca294d5708ab6213ff2f03ca6b0a32fa8fff6524e42e1b112915253898e5499
96 Risk Score

Malware Insights

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

The PDF file is identified as malicious by ML classifiers and ClamAV. It contains an embedded URL that points to a suspicious domain, disguised as a legitimate document about the Australian immunization schedule. The presence of embedded JavaScript, though not fully detailed, suggests potential for further malicious actions such as downloading additional payloads.

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://trafficel.ru/aws?utm_term=australian+immunisation+schedule+2019+pdf PDF link annotation
    • https://cdn.sqhk.co/karapazepot/UZTTgN3/snes_controller_for_wii.pdfIn PDF document text
    • https://cdn.sqhk.co/pakiwujipubi/jf8aigO/virustotal_uploader_2._2._exe.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/MFUjbje/rotating_brave_switch.pdfIn PDF document text
    • https://cdn.sqhk.co/gutemokerezo/ghe9sia/railway_apps_download_karna_hai.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490739/normal_5fd5f5833762e.pdfIn PDF document text
    • https://cdn.sqhk.co/zubixola/Ue6yauk/16527307920.pdfIn PDF document text
    • https://cdn.sqhk.co/lojeliju/hhhiwgj/mageli.pdfIn PDF document text
    • https://cdn.sqhk.co/ritafase/iicgfih/24392278610.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b63df330-e1e7-4c79-8fc9-bbae97e5e63a/mechanism_meaning_in_science.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/manualidades_con_papel_crepe_navideas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/909d61f4-789b-46c1-a4bd-1c7fda4352de/tiger_king_halloween_costume_nz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc897124-ce4a-41df-86ce-ab0542379b42/glencoe_psychology_self_check_quiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/946ccdb5-7961-414c-a8ea-7ee67be26360/rodunajukujoganominuniz.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/90232895160.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_off0000e733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE733 5868 bytes
SHA-256: 314988a81ba5e10cb41b08a59631ee4c3eb0a010d256faaf66fe701ed5b0bbe2
font_01_sfnt_off0000fb02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB02 12204 bytes
SHA-256: 2fbdd96245af11651e12c7e6cdcb0897bd866bca1263f7823f755b73947ac45f