Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e7547093176560d…

MALICIOUS

PDF

72.4 KB Created: 2021-03-18 20:31:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06964bd589f4adcec82d160104ca246b SHA-1: 7d0f678c56fa46564a7005b887ddd5102f69464b SHA-256: 4e7547093176560d81d121856335ff713b0706d4b110239d510eb758ef10e802
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, suggests a lure related to 'news digest'. The presence of an external URI indicates an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/wix?keyword=facts+on+file+world+news+digest
    • http://wesaremujoworu.22web.org/gotranscript_audio_test_answers_december_2018.pdf
    • http://davebamonuzove.medianewsonline.com/kojafebug.pdf
    • http://lofarado.iblogger.org/dr_myles_munroe_leadership_books.pdf
    • http://derewopenila.22web.org/72987182300.pdf
    • http://taribada.22web.org/cuidados_post_cateterismo_cardiaco.pdf
    • http://xorimomupajo.scienceontheweb.net/changing_back_to_word_document.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://s3.amazonaws.com/kukupunopedon/75052243683.pdf
    • https://s3.amazonaws.com/gagagakigibapo/lorimir.pdf
    • http://zurogukewujot.epizy.com/meradatukejofobi.pdf
    • https://s3.amazonaws.com/jemisajoda/banner_template_word_2007.pdf
    • https://s3.amazonaws.com/xilasisefi/atf_box_setup_latest_version_12._70.pdf
    • https://uploads.strikinglycdn.com/files/2da0cdbd-92f9-4fab-9875-39c913dcfa9d/real_and_complex_analysis_walter_rudin.pdf
    • http://sozuwag.epizy.com/lakimokuwiz.pdf
    • https://uploads.strikinglycdn.com/files/fb4bb99c-6682-47d7-8403-6e82659672e2/kajadome.pdf
    • http://degejukifukux.epizy.com/2574347506.pdf
    • https://s3.amazonaws.com/fekaduvopigab/2908055231.pdf
    • https://uploads.strikinglycdn.com/files/c624a6b1-04ab-4837-b179-02e741576b1d/ratakitowikiwonajejevam.pdf
    • http://kiwozoma.epizy.com/88357880678.pdf
    • https://s3.amazonaws.com/gavapozalilup/alkyl_halide_class_12.pdf
    • https://s3.amazonaws.com/lunojol/the_story_of_one_hour_by_kate_chopin.pdf
    • http://padijajuvon.rf.gd/fupidugovamevi.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
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca9e.bin
5bab8f8d43e7be17646ba9589e6607dfba15d8a88f1209c5054c3589682342ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA9E 5236 bytes
font_01_sfnt_off0000dc86.bin
a210e223e7f068feff11e66141f49b252083a27d1ca58a88dcdfcc99b07b1f2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC86 6092 bytes
font_02_sfnt_off0000ec58.bin
7df84a9e5fab91c97483c2bd3ce6c4e2a68fde5f834d3ffd758b285aa31a0444		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC58 11124 bytes

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