Malicious PDF — malware analysis report

Static analysis result for SHA-256 b92330417c6048a1…

MALICIOUS

PDF

118.9 KB Created: 2021-04-05 02:52:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e983563da2bc6674c686840bb27c9de SHA-1: 7e7b85858669c7b9f2e067e3867ed49e087584f8 SHA-256: b92330417c6048a1b00586847ad10169d0d07323d39c20c27835a0e7d1d7ed33
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a URL disguised as a search result. This URL likely leads to a phishing page or a malicious download. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/award?keyword=aeneid+book+5+pdf
    • http://tapasin.sportsontheweb.net/41749267828.pdf
    • http://safetugosuwe.22web.org/embriologia_aparato_respiratorio.pdf
    • https://cdn-cms.f-static.net/uploads/4413109/normal_60555aae09407.pdf
    • https://cdn.sqhk.co/jutusaxibu/dajgSgh/deziparibozetikez.pdf
    • http://baxezafewel.iblogger.org/30_day_ketogenic_diet_plan_australia.pdf
    • http://delabozaxexiris.getenjoyment.net/dom_quixote_miguel_de_cervantes_download.pdf
    • https://cdn-cms.f-static.net/uploads/4501037/normal_60152b41dd0ae.pdf
    • http://lesuluvavu.iblogger.org/barrier_free_design_guide.pdf
    • https://cdn.sqhk.co/luwagoma/dF7hh4V/super_orange_belly_ball_python.pdf
    • https://cdn.sqhk.co/vixivizal/ahdibje/mega_millions_nj_next_drawing.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fea6b314-ab6a-47d0-a789-c8d9fdceb6e0/putilobejixufinefubapojil.pdf
    • https://uploads.strikinglycdn.com/files/5dbeb043-523d-438f-bb4d-d1e388ce91b7/examples_of_project_based_learning_activities_for_elementary_students.pdf
    • http://tekarileted.epizy.com/65973004518.pdf
    • http://bonanelokuweje.rf.gd/zajowipivoxekesazov.pdf
    • https://uploads.strikinglycdn.com/files/fcede58c-6413-4a53-be59-139525e1ee61/think_of_me_phantom_of_the_opera_broadway_lyrics.pdf
    • https://d3df31c7-72fe-42b1-a92e-0723e8ed7a16.filesusr.com/ugd/5bf82b_741eff041e824a3ea92ebbfa72e8503c.pdf?index=true
    • http://bumurulepowele.myartsonline.com/brooklyn_colm_toibin.pdf
    • http://dopovis.myartsonline.com/zunevububekunet.pdf
    • https://6b551870-9d71-4c88-87ac-30bafd697196.filesusr.com/ugd/b27e13_7a10e559214944ada995efb9feefddb2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b95e0924-5143-4e34-81b8-2370f4abeac3/kidikurafuxidi.pdf
    • https://uploads.strikinglycdn.com/files/fcc53a51-f201-4c55-b051-1016e42753da/20544389460.pdf
    • https://aed0ee3a-d217-4696-a563-de9ff15d6c37.filesusr.com/ugd/f80e3f_b9619d70b1fa4e389e3bc2d295601948.pdf?index=true
    • https://a909b8fe-7c6e-4467-a5b6-92e64a2a5b5d.filesusr.com/ugd/65efca_cdd11a3eb508443681a156d6561b56e6.pdf?index=true
    • 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_off00018edb.bin
fbb85decf353948b057f172d79ec94c7cf9ab2faa9b30edefd3659473f044ec8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18EDB 4836 bytes
font_01_sfnt_off00019f68.bin
2d61b88238ce6c2187325acfe4950ad41bdc795770fc6200559e85f60f801b61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19F68 14692 bytes

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