Malicious PDF — malware analysis report

Static analysis result for SHA-256 a93615aa7d609baf…

MALICIOUS

PDF

66.6 KB Created: 2021-03-25 11:56:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a905f7e4d90c27b8984da46d2c46ba3 SHA-1: 2273a7021dc64fb96f5a26c98a760a9da59136bd SHA-256: a93615aa7d609baf3943fc7f2a4662d87ba8c62b3eded9049088be9bcec7997a
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, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. While no scripts were explicitly extracted, the presence of external URIs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

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://jumiwimov.ru/award?keyword=school+administration+and+management+sk+kochhar+pdf
    • http://zovolexune.sportsontheweb.net/difference_between_contract_and_agreement.pdf
    • https://cdn-cms.f-static.net/uploads/4486365/normal_60567c358ade7.pdf
    • http://tulavesew.getenjoyment.net/secrets_of_antigravity_propulsion_paul_laviolette.pdf
    • https://cdn-cms.f-static.net/uploads/4469126/normal_60432b8cc89cd.pdf
    • https://cdn-cms.f-static.net/uploads/4367268/normal_6046fc3cd0512.pdf
    • http://samewejasaka.iblogger.org/bolurojobud.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/piradi/google_web_designer_templates_free.pdf
    • https://s3.amazonaws.com/naxozelozude/65163597623.pdf
    • http://somekifizepu.epizy.com/novobipesevo.pdf
    • http://fogevodazeta.epizy.com/logo_animation_after_effects_template.pdf
    • http://bipedok.epizy.com/rapoxenixudo.pdf
    • https://s3.amazonaws.com/divexikav/golfbuddy_golfbuddy_aim_w10_smart_golf_gps_watch.pdf
    • http://mozaninukokefef.onlinewebshop.net/kemojisijonorisekovo.pdf
    • https://s3.amazonaws.com/nuselufuzo/garmin_nuvi_2555lmt_traffic_cable.pdf
    • http://judewal.rf.gd/zogomikitomogatimiguwe.pdf
    • https://s3.amazonaws.com/jevopemosod/thrive_wet_cat_food_feeding_guide.pdf
    • http://bufijonewufo.onlinewebshop.net/after_we_collided_movie_on_netflix_uk.pdf
    • http://jemileti.atwebpages.com/how_many_words_should_a_2_year_old_talk.pdf
    • http://jadodokuzikibu.rf.gd/11970649634.pdf
    • https://s3.amazonaws.com/wemazun/90998461526.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_off0000c97f.bin
556b07e0f6fdc6cdc130820c1d7fae5e9a2f27aa97774efd89622dbea3157193		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC97F 5736 bytes
font_01_sfnt_off0000dce0.bin
02504632f5d88f61745e74421988136334c9967a0c30015e3d76997b75c4e4a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE0 9360 bytes

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