Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae419f986dc02a1b…

MALICIOUS

PDF

91.5 KB Created: 2021-04-07 04:35:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e62629a711d6a9f08e8e3fe04fbe90e4 SHA-1: 6137a06a4aefa4959493ae9c3c6f57c0ee878fb7 SHA-256: ae419f986dc02a1b0b6b5f7151133695166724fb128e3f2a8065f261025beec1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to educational content, aligning with a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://pelibifir.ru/award?keyword=wordly+wise+book+8+lesson+9+answer+key+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376098/normal_6037c4f47cfc5.pdfIn PDF document text
    • https://viramerobudob.weebly.com/uploads/1/3/1/4/131483281/xatolavoromomaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389603/normal_603800a53055b.pdfIn PDF document text
    • https://kutakikojog.weebly.com/uploads/1/3/4/6/134688668/6480679.pdfIn PDF document text
    • https://baraxuworasexe.weebly.com/uploads/1/3/4/6/134633060/sefuzabojisusuruxa.pdfIn PDF document text
    • https://sojagimizalafar.weebly.com/uploads/1/3/5/3/135317111/c28f42d24.pdfIn PDF document text
    • http://kupatavosapulo.22web.org/63941755651.pdfIn PDF document text
    • https://sogitinavebifi.weebly.com/uploads/1/3/5/4/135400198/fisowu_xuriwobiriduto.pdfIn PDF document text
    • http://natewisuwosat.iblogger.org/11331017942.pdfIn PDF document text
    • http://razinotadoxali.iblogger.org/44532233871.pdfIn PDF document text
    • http://nizalanus.22web.org/91466007243.pdfIn PDF document text
    • http://seluluxafej.22web.org/badapepiti.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/navoburarovada/kisireloxunigiza.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/15356139928.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/how_much_does_a_commercial_fridge_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/what_size_filter_does_a_goodman_furnace_take.pdfIn PDF document text
    • http://kelutezawixe.epizy.com/65516175337.pdfIn PDF document text
    • http://wevosowenafa.epizy.com/theoretical_probability_worksheet_7th_grade.pdfIn PDF document text
    • http://jezirateba.rf.gd/malinowski_contribution_to_anthropology.pdfIn PDF document text
    • http://wadekazu.epizy.com/c_form_application_on_mahagst.pdfIn PDF document text
    • http://bekogufepe.rf.gd/calculos_trabalhistas_2020.pdfIn PDF document text
    • http://zuxifeka.epizy.com/cyberpunk_2020_character_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/how_do_i_download_music_for_free_on_android.pdfIn PDF document text
    • http://jedenibiripo.epizy.com/day_to_day_timetable_template.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_off00012351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12351 5796 bytes
SHA-256: 37a31375e13f1220c97bc33192a6bee714443b7931121230e1b2368b8f412f9a
font_01_sfnt_off00013736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13736 11516 bytes
SHA-256: e3f7cf2154d67abb3d12bb20248973058d7139e0f0344eeba8c530d1a2624692

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