Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aaa2e610254ff7c…

MALICIOUS

PDF

78.6 KB Created: 2021-03-14 06:05:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d74418583fd1865c75898619a1e556d3 SHA-1: b4563eb92f4ac9626c92c8be59ea8058526d3e19 SHA-256: 8aaa2e610254ff7c0e80785bd8425c342d5ae307d8a0cfb2d4fc5c7128f0a1ff
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing lure or a download redirect. The document body, though heavily obfuscated, suggests a lure related to 'Pete Buttigieg book pdf', aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://dafemum.ru/award?keyword=pete+buttigieg+book+pdf
    • http://koxelovanalimu.getenjoyment.net/vudolimo.pdf
    • http://igbusinessabouthelp.com/biology_campbell_onlines5pbd.pdf
    • http://meetsol.xyz/21312892228l7k1d.pdf
    • http://persequen.com/what_age_rating_is_terminator_dark_faterg4rg.pdf
    • http://meetchambre.xyz/93787867246hrzku.pdf
    • http://simultaneously.space/evangelios_apocrifos_descargar_gratisutqnw.pdf
    • http://lozejebivo.scienceontheweb.net/kekojo.pdf
    • http://mebevevi.mywebcommunity.org/41556211463.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ff78b0f4-1bd3-4736-880e-70239c89ce1b/how_do_i_put_my_call_on_speakerphone.pdf
    • https://uploads.strikinglycdn.com/files/efb4ba23-8a54-45a9-92d4-57cbc2188da7/desobuzipijolumen.pdf
    • https://s3.amazonaws.com/xakajoziwibi/challenging_negative_automatic_thoughts_worksheet.pdf
    • https://s3.amazonaws.com/gazivemon/free_editable_chalkboard_invitation_template.pdf
    • https://s3.amazonaws.com/zonivezada/99347575074.pdf
    • http://lekazukexofa.rf.gd/36655859067.pdf
    • http://zowiseli.epizy.com/80009596432.pdf
    • https://s3.amazonaws.com/tinajabizoreguf/agreement_letter_template_between_two_parties.pdf
    • http://sefijepevuzazax.rf.gd/rheem_classic_90_plus_furnace_error_codes.pdf
    • https://s3.amazonaws.com/dugibabafod/synecdoche_new_york_720p.pdf
    • https://uploads.strikinglycdn.com/files/e29dfb56-96ea-4465-9df5-c72e7674785a/zukogozetoni.pdf
    • https://uploads.strikinglycdn.com/files/ed842b21-8277-4a67-b54c-ed8b70a28960/lolomulet.pdf
    • https://s3.amazonaws.com/sojebelevenex/98069276094.pdf
    • http://dakovupogoz.rf.gd/how_likely_is_the_big_bang_theory.pdf
    • http://lofenabowebezuk.epizy.com/frosty_the_snowman_song_original_artist.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f716.bin
0dd3ad2d9269f705437eeb24614700de662fe4d075cae04b1cd4977b82b0c8f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF716 4900 bytes
font_01_sfnt_off000107e0.bin
b076a0ea3737ecfd677957e612b0d083d7821cbbae6b799bf1418633b5aefcc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107E0 11100 bytes

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