Malicious PDF — malware analysis report

Static analysis result for SHA-256 a23b66dd064d0000…

MALICIOUS

PDF

81.1 KB Created: 2021-04-06 16:16:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e835a34d106b2770f7d65c610993136 SHA-1: 49e3ad93bc5a5b848fae95f565ff8b39f8e00f27 SHA-256: a23b66dd064d0000b63ee46495c6356ef4d1424ae3926e1b5ff4e14d2b9b72ea
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that is disguised as a helpful guide for resetting a Samsung Galaxy Tab. This lure is likely intended to trick the user into visiting a malicious website for phishing or to download further malware. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://xezojetit.ru/strik?utm_term=how+to+reset+samsung+galaxy+tab+ce0168
    • http://mon-cmso.best/3d_anaglyph_games_for_pc_freeonknn.pdf
    • http://lifeit.pro/20859796562z465z.pdf
    • http://floradoma.net/access_database_templates_training_recordskh6vt.pdf
    • https://cdn.sqhk.co/fefamuve/niaietb/the_spiral_staircase_movie_review.pdf
    • https://cdn.sqhk.co/perikowep/he1jdgf/stiletto_nails_designs_pinterest.pdf
    • https://cdn.sqhk.co/tugirujozi/iihaihK/paypal_new_phone_number_can_t_login.pdf
    • http://health-top.ru/my_wall_heater_wont_turn_onfiotk.pdf
    • https://cdn.sqhk.co/lekibapufe/hjft3jg/inside_out_and_back_again_audiobook_part_1.pdf
    • https://cdn.sqhk.co/zawileveruz/agfhb9E/41228845671.pdf
    • http://jipetabonitu.mywebcommunity.org/15875621675.pdf
    • http://tehnopolis.org/79590527753zggt6.pdf
    • http://gamukanemafutu.mywebcommunity.org/ontology_in_qualitative_research.pdf
    • http://lerob.info/how_to_improve_data_skillssc3ty.pdf
    • http://idealicaufficiale.website/99445395547cbvq1.pdf
    • http://svoytrylend.xyz/thinkorswim_tutorial_options61hof.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/sumesawoxajew/printable_gingerbread_man_story_sequencing_pictures.pdf
    • http://vidilig.onlinewebshop.net/bicyclic_compounds_nomenclature.pdf
    • https://uploads.strikinglycdn.com/files/102d4126-dbf5-4832-9f22-e980cd5651c3/narejelemopikawoze.pdf
    • https://s3.amazonaws.com/xugigabitulu/xujemikakoponipiwaka.pdf
    • https://uploads.strikinglycdn.com/files/9e3d1e8c-8fa1-4113-9f41-1c336e20f3ea/how_to_fill_epson_ecotank_with_sublimation_ink.pdf
    • https://s3.amazonaws.com/tamobalasu/2019_monthly_calendar_template_free.pdf
    • https://s3.amazonaws.com/kewakuko/34171961703.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef88.bin
a8bfe2501f009d6adc6f360c06d5f8c433269633dabd3d72e220b4cc506f88e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF88 5856 bytes
font_01_sfnt_off0001037b.bin
f381fcbd9951ff081fc823bdc65e6c5a53591945c7ac3f8956ab22aa141981e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1037B 10892 bytes
font_02_sfnt_off00012893.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12893 4324 bytes

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