Malicious PDF — malware analysis report

Static analysis result for SHA-256 32fa82485598e3bf…

MALICIOUS

PDF

77.7 KB Created: 2021-03-31 03:14:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f667749879ceacebfcf5fbd8877b1a5 SHA-1: d49548c00679db63746468c218c6e579d3b28c9b SHA-256: 32fa82485598e3bf54c596a8fcd93ee3d037e5eda033e42c6752ee6cd99e0d21
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 or malware distribution scheme. The document body is heavily obfuscated, but the presence of external URIs suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kuzutuzo.ru/strik?utm_term=what+are+speakeasy
    • http://tufinanegonaj.medianewsonline.com/a_wrinkle_in_time_chapter_5_questions_and_answers.pdf
    • http://vowujebotoza.mywebcommunity.org/how_do_you_do_ratios_with_fractions.pdf
    • http://rejasikega.scienceontheweb.net/automatic_stitching_machine_for_book_binding.pdf
    • http://idealica-italiaoficial.site/intercessory_prayer_scripturest5vlp.pdf
    • http://sevezor.scienceontheweb.net/the_peasants_life_during_the_middle_ages_was_largely_determined_by.pdf
    • http://rolapisi.scienceontheweb.net/harbor_breeze_mazon_ceiling_fan_light_bulb_replacement.pdf
    • http://zememor.sportsontheweb.net/learn_how_to_do_college_algebra.pdf
    • http://about-central.com/75313527200lulb7.pdf
    • http://rawoxaxevog.mygamesonline.org/absorcion_atomica_definicion.pdf
    • http://zonuvak.medianewsonline.com/diablo_iii_eternal_collection_ps4_review.pdf
    • http://service-hire.com/97904216743dfo4m.pdf
    • http://bezprovodov.guru/blackmagic_design_atem_mini_live_production_switcher_review77pm9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xasejumav.onlinewebshop.net/68470448313.pdf
    • https://uploads.strikinglycdn.com/files/b39c0ef8-b3c7-4c56-ab0b-db4ae3f4a058/gibutal.pdf
    • https://s3.amazonaws.com/gifojuxaxeva/why_do_i_have_a_painful_lump_on_my_scalp.pdf
    • http://rotufixijisadi.onlinewebshop.net/docker_run_bash_command_not_found.pdf
    • https://s3.amazonaws.com/pekatikisuruki/amana_front_load_washer_reviews.pdf
    • https://s3.amazonaws.com/novipaliwid/48666004138.pdf
    • https://uploads.strikinglycdn.com/files/80259d25-5750-4ba2-9e3a-a18b7f9c7213/what_are_the_major_geographical_regions_landforms_and_bodies_of_water_in_canada.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_off0000f32e.bin
06710483397aedca43f52cd79b4f188ae9e37e5e74148bab483f340d401be373		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF32E 5052 bytes
font_01_sfnt_off0001046d.bin
fd405adf4d1eda79c43561a4bb224722f07e0b40febc29a0b3c68e6d8dabb974		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1046D 10952 bytes

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