Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6fb12db11f16fd5…

MALICIOUS

PDF

70.1 KB Created: 2021-02-28 00:54:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 3247f72ab4649749209800261d8efedb SHA-1: fa40c95f10510d8b4aa04cc8fdd10a291184f7c4 SHA-256: c6fb12db11f16fd5f871a48ef7be80f2e16f522531b07283b374c6a96b6ae9ad
104 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains embedded URLs and a visual download button lure, suggesting an attempt to trick the user into downloading further malicious content. The presence of external URIs and embedded URLs points towards a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://zajinet.ru/wix?keyword=monster+hunter+world+kulve+taroth+weapons+mod PDF link annotation
    • https://cdn.sqhk.co/sazelusup/gcvjhji/pudemasejisajomufevivad.pdfIn PDF document text
    • http://carbags.site/228958119564arac.pdfIn PDF document text
    • http://kismykeitio.best/what_amendment_did_brown_v._board_of_education_violatedfjq83.pdfIn PDF document text
    • http://visionnew.xyz/65167596444c3zen.pdfIn PDF document text
    • http://datinge.site/336564401662myf2.pdfIn PDF document text
    • https://cdn.sqhk.co/gibewuzavi/KhajgXa/ufc_fight_night_results_tonight_card.pdfIn PDF document text
    • http://getcreditcheck.info/nelifomoxekoveruk95j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424024/normal_6039dc246ddb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448713/normal_600aa1d9e5699.pdfIn PDF document text
    • http://save50.pro/jebawilonutupefuturukeporfrzv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447434/normal_5ff9c8a476abc.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/MFhejcY/wwe_raw_grades_results.pdfIn PDF document text
    • https://cdn.sqhk.co/pezolaje/bjeQFxw/best_free_audio_recorder_software_for_windows_10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401518/normal_5fc7fb9ad8175.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/rujabepifar/authorized_representative_form_medicaid_missouri.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/android_10_features_in_nokia_8._1.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/infinix_note_phone_price_in_nigeria.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzakob/roku_3_remote_green_light_flashing.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/91194507035.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_off0000d469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD469 5420 bytes
SHA-256: bb9ec856ed4b0372d4711f21ddb8a22d658df6b2324b8be4f9af95860b31954d
font_01_sfnt_off0000e6ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CE 10588 bytes
SHA-256: 1891f56a5694909852763c5f276f149d7b19f67ef43b285bdf25d8e0cf4107a1

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