Malicious PDF — malware analysis report

Static analysis result for SHA-256 12a2b086e7a9118d…

MALICIOUS

PDF

78.1 KB Created: 2021-04-04 12:47:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 245d45e542c60d8eb36b2061cdfd31e6 SHA-1: 6677d014022b1890f846d3f0ce78863f8a04810d SHA-256: 12a2b086e7a9118d80e43e1a5af6106d71aaa79b3996696ed79ef17d4c354b89
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result, likely intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of an external URI points to a phishing or credential harvesting attempt.

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://golowaki.ru/award?keyword=farmakologi+anti+jamur+pdf PDF link annotation
    • http://presentinsta.online/jukizivescswfc.pdfIn PDF document text
    • http://boxberry-24.cc/american_civil_war_photos_then_and_nowwblpo.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/tabobujimo/jerudivoregodusasu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dab9aef9-e428-4335-a4bf-c8054f09f326/how_to_edit_a_drop_down_list_in_word_2016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/203f4424-23fd-4047-86d1-62f9bf3565f1/30987368069.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d8968a3-b420-4d81-a956-afdd5948c3ea/silkn_flash_and_go_stopped_working.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/thank_you_very_much_song.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/polycom_hdx_7000_admin_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/33223055625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec6ded0a-8028-435a-91d7-d64f8e08945d/29156559641.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/87565291839.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/573de2e4-9e4d-472d-8268-9a79e66ed596/tupedawitinijenitikekup.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/quote_for_logo_design_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/difficult_linux_interview_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d484c07-455b-4165-9917-3c52b8160da2/how_to_change_honda_odyssey_power_steering_fluid.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/tamil_songs_2014_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/55918147214.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d657637e-c53c-477e-abf2-e7b02182e50c/cub_cadet_xt1-enduro_series_46_inch_lawn_tractor.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/2006_scion_xb_reviews_consumer_reports.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_off0000f533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF533 5280 bytes
SHA-256: bb2c432f914aa5815a4747724ced1b194503cf1f0b1c39087a0a0666164614ca
font_01_sfnt_off00010721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10721 10616 bytes
SHA-256: 8368de0fe8aa6d6e27d1e1706dec6b15c19417f0269c75e34571851be31967d9

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