Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6ecdf2ab8514d5e…

MALICIOUS

PDF

76.4 KB Created: 2021-03-29 03:57:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7ae355df64d9d81f8814b2d16cb2e0b1 SHA-1: b36837f3e969dc280d1d4e029a051a9b32eb68e7 SHA-256: e6ecdf2ab8514d5e19ceee9f8686caa068cfce27451ab99b38cd19ea67219109
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a suspicious domain, 'druttle.ru', which is likely used to host a malicious payload or phishing content. The document body is heavily obfuscated, but the presence of the external URI suggests an attempt to redirect the user to a harmful resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/strik?utm_term=greek+latin+root+word+for+phon PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4502188/normal_5ff64e2120fde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444115/normal_6022eb7fa61ef.pdfIn PDF document text
    • http://characduwe.space/184723731266hxna.pdfIn PDF document text
    • http://bagerisevi.scienceontheweb.net/raziri.pdfIn PDF document text
    • http://myfoxing.online/star_wars_imperial_handbook_a_commanders_guidexfg52.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371553/normal_5ff683c5bc764.pdfIn PDF document text
    • http://beamorem.com/93022387980gc6w0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470553/normal_600dce1429a8f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/74a695f3-5d58-40e5-b31c-20edc7bd037f/how_do_you_reset_a_braun_thermoscan_6013.pdfIn PDF document text
    • http://kigetivizaru.epizy.com/82120405569.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/zunujoforewelipuserete.pdfIn PDF document text
    • http://vorafudozef.rf.gd/how_to_use_headset_mic_on_cyberpowerpc.pdfIn PDF document text
    • http://zowadakal.epizy.com/candy_to_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/26_schwinn_sidewinder_womens_mountain_bike_matte_black_pink.pdfIn PDF document text
    • http://gatanugirax.rf.gd/vulaxemivobirosewizofi.pdfIn PDF document text
    • http://vamavaremimot.atwebpages.com/story_of_seasons_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/whats_another_word_for_all_the_best.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bd79cec-6a84-4897-917f-42bc73746744/60364894282.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/2012_toyota_camry_hybrid_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/brisbane_tv_guide_rugby_world_cup.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE897 5136 bytes
SHA-256: 3d2d59d723cd7f192e39b5cc2e80463f35c819741875cac6f844a585a8747d8c
font_01_sfnt_off0000fa26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA26 12400 bytes
SHA-256: 2360218e40be4e516e9979d878c01b3b2f287341840fa7fc63f6fc91323b230f

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