Malicious PDF — malware analysis report

Static analysis result for SHA-256 184b20b6d505cea0…

MALICIOUS

PDF

69.4 KB Created: 2020-12-02 07:26:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e366d80f0119a05aa583125c4c805606 SHA-1: 1caecea2ff0d5b79c4ea101734f7405198e3e8e7 SHA-256: 184b20b6d505cea00c895e6fb167d16775e69d11eab3babb7eb77e1646b366b2
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The heuristic 'SE_MFA_LURE' indicates the document is designed to harvest credentials or MFA approvals. The embedded URL points to a domain associated with phishing activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://traffset.ru/123?utm_term=skout+premium+apk+free PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfebdec0a1d2b4e560e4d/1606221508041/lopimev.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/bixavaramokej.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/52904215098.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb636722-10d2-4a4d-b2da-c107ff65b8d6/beyhadh_background_music_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4cc83239b0722914a2f70/t/5fc68717bc819f1cf4bb4e06/1606846232085/45185454622.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10304b8467722f1d4df02/t/5fc20da03c02f22b9d545d08/1606552992405/41675593311.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/project_management_log_template.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4aaabc819f1cf4cebbe2/1606372011085/mass_stoichiometry_worksheet_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4e5cef7cf8c75404468c7/t/5fc5c05b3c02f22b9dd3c08d/1606795358668/21974859526.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13991cf3-81ea-4638-98fb-08f9e2ed0dab/sezibimi.pdfIn PDF document text
    • https://s3.amazonaws.com/moxekibupuru/busutixa.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/criminal_law_amendment_act_2013_india.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d3b00b6b03258f353712/t/5fc26df33485235c86155f11/1606577652240/autobiography_sample.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c87d3dfdd95b60d47c17/t/5fc3e72df81c9a2a0c1a2e16/1606674221347/calculating_electrical_power_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/827f10c4-227f-4e4b-b4f2-a25ed3d06a25/nolufutufabik.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_off0000d52e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD52E 5004 bytes
SHA-256: 989f5ffb389bb0f05f9fa7a10578602c59f2cbff7e0ee4194d67eb67d28ad02f
font_01_sfnt_off0000e622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE622 10100 bytes
SHA-256: 98f406c73a37dd0ae911929951d98283ed43914d306f5cdcdd2a50a945411954

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