Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf0968bb761426b4…

MALICIOUS

PDF

66.4 KB Created: 2020-12-11 08:55:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2be37b2e44f456fbf72f355374a69709 SHA-1: 55742bc164d522c87999c8c46aff11e84c3905be SHA-256: cf0968bb761426b4adbf41fd3e075a532ee2d0941f0e012f72da787ad01b60c3
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, trafftec.ru. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although the document body is heavily obfuscated, the presence of the external URI and the high confidence scores from security tools suggest this PDF is designed to redirect users to malicious content.

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://trafftec.ru/aws?utm_term=android+chrome+desktop+version PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404502/normal_5fb5c0528e028.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487191/normal_5fbe0a9055d4e.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/43e64ebc-ff5c-4099-b725-ff004eaf95fa/fanelitunoser.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc06b0d2e537a05ef0695ba/t/5fc0f232e18c5c478e1dfbc3/1606480435748/girl_scouts_los_angeles_cookie_rewards_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ae0bc4f-1575-4cc4-8629-6f689ffd09d4/rufapumebodinefakoluboki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fd51ad4-f3b7-4917-a26b-dbd6888d6c14/idolmaster_sidem_live_on_stage_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64cfe12facd59ced1d628/t/5fcc6959a87f9f1b19d0a97e/1607231834178/wujazufudusikuwixokerugok.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/tuxagomujimutokuwifo.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/home_buyers_guide_for_dummies.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/10324767389.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5a169b1ed03538d2614f/1606375960260/wauseon_elementary_school_wauseon_oh.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/henry_j_kriegstein_md.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa3f9455-5c0e-447a-b4c0-afc154b3cef3/huawei_hg633_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1c049c6d9645836281f45/t/5fc3244e3485235c862ddb94/1606624334380/72611326358.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_off0000c701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC701 5184 bytes
SHA-256: 91a7b0bed9cd61befd9b648fc7200a368ca844a2b90b3331e043682c6d68c2a9
font_01_sfnt_off0000d881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD881 11092 bytes
SHA-256: c3a76aa06cfad0f9d6d2cf9e5da137313d5c554498f668d8839a67f679e29444

Open this report in the interactive analyzer, or submit your own file for analysis.