Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ee9ab128845dcdc…

MALICIOUS

PDF

73.9 KB Created: 2021-05-05 22:59:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4978f71cec6acc814507bc42ca09dca6 SHA-1: 201f9ed92c485014c047828f9f4e69dd4b399d3e SHA-256: 5ee9ab128845dcdc99b97b61c60f3215e23fa2978918f6b05a346a54303e31ee
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one prominent URL suggesting a phishing lure related to 'balancing chemical equations worksheet'. ClamAV and an ML classifier flagged this PDF as malicious, specifically identifying it as a phishing trojan. The presence of embedded URLs and the nature of the detected threat indicate an attempt to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

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://resalured.ru/strik?utm_term=balancing+chemical+equations+worksheet+110+questions+answers
    • https://cdn.sqhk.co/mukibusu/hfgjblk/natefos.pdf
    • http://timurberg.ru/how_to_use_shark_euro_pro_steam_moplwbw0.pdf
    • http://midakurapujif.mypressonline.com/statistics_formulas.pdf
    • http://vuzetasavuxoso.mygamesonline.org/1930621061.pdf
    • http://bcpreactiva-enlinea.com/joxewozixotapobavu9yzt.pdf
    • http://sevagawos.getenjoyment.net/boolean_algebra_and_logic_gates_notes.pdf
    • http://about-igsupport.com/what_food_can_i_eat_for_acid_reflux472lq.pdf
    • https://cdn.sqhk.co/jezuleku/rdgeNO5/vuzeweperixibesasa.pdf
    • http://vovpomnim.ru/minions_illumination_full_movie_free5qy64.pdf
    • https://cdn.sqhk.co/govuzupikiwe/jeKLihQ/xexajaronekox.pdf
    • http://zukesijinizik.mywebcommunity.org/chronic_obstructive_airways_disease.pdf
    • http://nout-prokat.website/star_wars_kotor_2_mod_restoration44kdt.pdf
    • http://palawawez.mypressonline.com/16178112926.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/19a75c87-c5b9-481b-a837-32719a8ddb9c/tarot_decks_for_sale_pakistan.pdf
    • https://61069a5e-3c5f-4884-a3c7-8c7552058b74.filesusr.com/ugd/0789d5_a3f9d48e3fc54db88b3bb833f0d579b3.pdf?index=true
    • https://711920be-b761-4f0e-a604-762b26663b16.filesusr.com/ugd/ffcbea_6b039f279e9a44aa8706960d43d818cb.pdf?index=true
    • http://velelakolifuvu.onlinewebshop.net/48298086419.pdf
    • https://uploads.strikinglycdn.com/files/f7a0b9d4-1b77-48c5-8afa-a817dbd3a887/27845599577.pdf
    • https://45f91bdd-2b68-4e60-ae2c-b14373ae5332.filesusr.com/ugd/0d089b_c67f2697a6c747acb444c66139a73025.pdf?index=true
    • https://6448a590-b571-4b71-a9e4-820b8531b153.filesusr.com/ugd/782be2_89dc6ed2c7d04543a951e785a871407f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/afdd50df-d9dd-4759-9d00-76e65958eac6/learn_how_to_trade_penny_stocks_for_beginners.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_off0000e0b5.bin
f4374ed506c7e4d647cca626b2100f8c30b6a9d860e4e59ca6cbf9e21d610434		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B5 5736 bytes
font_01_sfnt_off0000f423.bin
1f4e3b95c4106e9a9ec771fb7dc1dba90af989869e1505007f4ed626e660deba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF423 11372 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.