Malicious PDF — malware analysis report

Static analysis result for SHA-256 0492a5f36747b53a…

MALICIOUS

PDF

85.6 KB Created: 2021-03-29 06:03:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75f4daaab34fc1111d1d6695772a298e SHA-1: 7596addaf0f5b5b5e6404b490f68a888b19cf4cb SHA-256: 0492a5f36747b53ae1de9df13da402e8b4906a696700f917a6fd2497d856ea17
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'resalured.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'free drawing classes'. No scripts were extracted, but the presence of external URIs and the malware detection strongly indicate a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://resalured.ru/wix?keyword=clases+de+dibujos+gratis
    • http://lagulesuko.medianewsonline.com/solving_compound_and_absolute_value_inequalities.pdf
    • https://cdn.sqhk.co/nemisova/gg75Zgw/fascination_advantage_report_free.pdf
    • https://static.s123-cdn-static.com/uploads/4491945/normal_5ffda7ffaa4e2.pdf
    • https://cdn.sqhk.co/tizuvuwo/bhexqFR/five_nights_at_freddy_s_toys_walmart_canada.pdf
    • http://pibarulajido.getenjoyment.net/what_is_the_main_idea_of_the_way_to_rainy_mountain.pdf
    • http://pusapev.scienceontheweb.net/agostinho_neto_sagrada_esperana.pdf
    • https://cdn.sqhk.co/dazulegug/jgcgdhc/game_room_ideas_pictures.pdf
    • https://cdn-cms.f-static.net/uploads/4478146/normal_6045e891b4ca4.pdf
    • http://rakadan.sportsontheweb.net/letra_del_himno_nacional_mexicano_version_escolar.pdf
    • http://pakirekugep.scienceontheweb.net/adjective_degree_exercises.pdf
    • https://cdn-cms.f-static.net/uploads/4365594/normal_604ce63858093.pdf
    • https://cdn-cms.f-static.net/uploads/4501962/normal_602d68d4d566b.pdf
    • https://static.s123-cdn-static.com/uploads/4417221/normal_6005f767eb329.pdf
    • https://cdn-cms.f-static.net/uploads/4473963/normal_6022eca592944.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mokamoba/misav.pdf
    • http://dezobod.onlinewebshop.net/bhagavad_gita_in_english_with_meaning_free_download.pdf
    • http://vorisenunajix.myartsonline.com/sulevopibogepuga.pdf
    • http://muvipej.atwebpages.com/66727939789.pdf
    • https://s3.amazonaws.com/satedafadusizo/99212879567.pdf
    • http://bopubedoru.myartsonline.com/essentials_of_biostatistics_in_public_health_3rd_edition_free.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f097.bin
ecd78d58e09ae005858327905bc61c3e6ecd5bcf9b2e7d50aac15e6123e4f872		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF097 5112 bytes
font_01_sfnt_off000101fb.bin
13678a14b930e6d42e11b2ac41b13981c2c7f5938cc30cfb194ad51886f1f1dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101FB 2092 bytes
font_02_sfnt_off00010ba0.bin
b140fbe21692024df6b8e3aac734cec11bf4253a5a1515be15a62ec793040b37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA0 11256 bytes
font_03_sfnt_off00013029.bin
9f2bd3c783f8bad964ea757f7f02ad9402bd5df513bf11f1a338edda01b1a38e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13029 16488 bytes

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