Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb7a9f52c55b3314…

MALICIOUS

PDF

195.9 KB Created: 2021-02-15 20:39:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fe85c1dbec9d1fcf0fe0df00092ad365 SHA-1: b762ec0bbba8816846fd05ca0064dc06bbb595ba SHA-256: fb7a9f52c55b3314fd64d504c56e70f8823411287d8fd1864eaa07a5a96f7917
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or credential harvesting attempt. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic indicate the file's primary function is to redirect users to a malicious website, likely as part of a spearphishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wix?keyword=camp+half-blood+confidential+pdf+google+drive PDF link annotation
    • https://sasominafa.weebly.com/uploads/1/3/4/3/134362810/1424875.pdfIn PDF document text
    • http://idealica-italiaoficial.site/old_jaani_dushman_movie_songs_freez0efl.pdfIn PDF document text
    • http://sewonmedix.ru/corn_coloring_sheets_free_printables8cpyo.pdfIn PDF document text
    • http://english-10.site/algebra_expressions_worksheet_grade_6b94hc.pdfIn PDF document text
    • http://familyit.pro/junosadukemivuawe37.pdfIn PDF document text
    • http://taptopbot.com/34865585271di5zu.pdfIn PDF document text
    • https://wuzesitawe.weebly.com/uploads/1/3/4/7/134733123/dcc7078.pdfIn PDF document text
    • https://xovomono.weebly.com/uploads/1/3/5/3/135345708/7752784.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vovuzize/checkmarx_eclipse_plugin.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/82623751367.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/fipojunowepakebifimepen.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/10170091661.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/ferevaf.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/customer_service_sample_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/abcd_song_form.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/bodybuilding_program_at_home.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_off0002c7c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7C3 5528 bytes
SHA-256: 3602ed939286720f8b2a683fdf7a594e1a5147568865bd8dbf164cfe6e585563
font_01_sfnt_off0002da6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA6E 11524 bytes
SHA-256: 9623c56718bd7ea50c565906149a1e2f7d32386b77e786efd91651f60a98ae96

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