Malicious PDF — malware analysis report

Static analysis result for SHA-256 01126fc6a1c7c264…

MALICIOUS

PDF

65.2 KB Created: 2020-11-16 17:14:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d33eacc4603fb2b4fcc53f36c51a1af0 SHA-1: de7fb28e911f1406a1100aa35631fb2e0a4e1428 SHA-256: 01126fc6a1c7c264d898a98c420ef3910d665bb176accbe9ac833627ff0775a8
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-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://trafffi.ru/aws?utm_term=icu+nurse+job+description+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384299/normal_5f9457c55ab3e.pdfIn PDF document text
    • https://folatidaxewurel.weebly.com/uploads/1/3/4/3/134317863/jobuxizudegujagi.pdfIn PDF document text
    • https://tedumuwoke.weebly.com/uploads/1/3/1/3/131397970/9867618.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412173/normal_5fa88fd448464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484169/normal_5fab64fdf41ed.pdfIn PDF document text
    • https://bilafewutugu.weebly.com/uploads/1/3/4/6/134619215/kavofunebojano.pdfIn PDF document text
    • https://zirasave.weebly.com/uploads/1/3/4/0/134096010/7120374.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/99736053-8d54-49ab-a243-bf0b8ef63595/schnuffel_bunny_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/629b21f6-e772-40c8-abd0-c36a8d1285f1/raruzopeziruw.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/56623564387.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a43bf67d-bd49-486a-9a35-b5810471080e/mejejuv.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_off0000c501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC501 5060 bytes
SHA-256: 95f936097bbcf34f6ea7cc2e6e8fb68600754fc689e34c967b53eb8643ae6b57
font_01_sfnt_off0000d643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD643 10024 bytes
SHA-256: 940f6653d906229b74260b6418bdd7799af411df38e457b99ea0d480fd94071c