Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddf399353224466d…

MALICIOUS

PDF

85.2 KB Created: 2021-03-03 17:34:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: f9e7d72bfa1db220979b0664e890d1fd SHA-1: 59b9dafa11ab56b55e7e2707df7f4d3cb757bb49 SHA-256: ddf399353224466da7aab7eeb022e1a9c4c3705cede761aadd5ac8adf4fa43d3
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a malicious domain. The document body, though heavily obfuscated, appears to be a lure related to a search query. The presence of external URIs and the ML classifier's high confidence score indicate a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/123?utm_term=star+trek+2009+opening+song PDF link annotation
    • https://cdn.sqhk.co/sogefuluf/jfxLgiF/tazejitiwudebesaxofe.pdfIn PDF document text
    • http://wonder-ita.fun/32763364283m151p.pdfIn PDF document text
    • http://dfahsdfgjsfg.online/single_bed_sheet_sets_sale29t9o.pdfIn PDF document text
    • https://cdn.sqhk.co/sivadapexiri/g7UihcF/41702539890.pdfIn PDF document text
    • http://snt-br.ru/bibalinolpzwe.pdfIn PDF document text
    • https://cdn.sqhk.co/wigatozaduw/habWgjN/kung_fury_cast.pdfIn PDF document text
    • http://soul-felt.com/emergency_contacts_form_for_qfes_monitored_fire_alarmsfwj0v.pdfIn PDF document text
    • http://topstop.site/12863204871t4c5.pdfIn PDF document text
    • https://cdn.sqhk.co/lopovekis/iKghgfz/62401688988.pdfIn PDF document text
    • http://copyrightnotices-form.com/472812295040ihrp.pdfIn PDF document text
    • http://zufabud.22web.org/60047390339.pdfIn PDF document text
    • http://pmaider.com/how_long_should_a_honda_shadow_last5hx30.pdfIn PDF document text
    • http://naykaryadom.fun/20744388750f09fr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sorogamat/lajoteke.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/naxovumetagej.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/jasonunivupeke.pdfIn PDF document text
    • http://gefofezas.rf.gd/how_to_convert_latex_to.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/chori_chori_movie_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/reduce_size_acrobat_pro.pdfIn PDF document text
    • http://jukopiwiguf.rf.gd/what_two_raw_materials_photosynthesis.pdfIn PDF document text
    • http://rawobebisef.epizy.com/59913783816.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/39222947563.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10154 5340 bytes
SHA-256: b5795025a34ecefeae481e7034658a63901b551f5b870aed6cce304be9a62872
font_01_sfnt_off0001137e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1137E 11132 bytes
SHA-256: 16f14c177a9f4ce98febac1003b66558e888a907668572d87dc74332da3798ad
font_02_sfnt_off00013938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13938 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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