Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab4678f9b81ac5c…

MALICIOUS

PDF

81.1 KB Created: 2021-04-01 01:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9056177c450622728415d76dc8a78c9d SHA-1: d63ff6b3a725713afa1341be73dae19a737861a8 SHA-256: dab4678f9b81ac5cf65262220f032829e0ed585554ef8fcf652e681534f93f26
96 Risk Score

Malware Insights

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

The file is a PDF containing obfuscated text and embedded URLs, with a high ML classifier score and ClamAV detection indicating malicious intent. The primary URL, 'https://xezojetit.ru/strik?utm_term=toro+6.5+hp+recycler+lawn+mower+blade+change', suggests a phishing or malware distribution lure related to lawn mower parts. No scripts were extracted, but the PDF structure and embedded URIs are indicative of a phishing or downloader attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://xezojetit.ru/strik?utm_term=toro+6.5+hp+recycler+lawn+mower+blade+change
    • https://cdn.sqhk.co/xevowuto/hUieJ16/the_walking_dead_our_world_apk.pdf
    • https://cdn.sqhk.co/wexazaruko/hegcjhO/sharkbite_codes_halloween_2020.pdf
    • http://sofefowu.iblogger.org/kakujituledax.pdf
    • http://itsnat.space/daily_reading_comprehension_grade_6wpuck.pdf
    • https://cdn.sqhk.co/doginifa/hbhgDja/toy_blast_app_store.pdf
    • http://tdsevsvet.ru/palanga_autobus_stotis_informacijao7ltx.pdf
    • https://cdn.sqhk.co/bujugasefoli/hgMQjbE/download_pop_shooter_blast_mod.pdf
    • https://cdn.sqhk.co/tibakekavero/kgdjdjh/35935853474.pdf
    • http://povar2020.site/photoshop_christmas_patterns_freecbpra.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/b2d428c7-cad1-4e20-9ef7-2a227605135a/72771164482.pdf
    • https://s3.amazonaws.com/bipepezuwed/roadrunner_united_the_enemy_free.pdf
    • https://s3.amazonaws.com/lorerexeg/dell_inspiron_n5010_memory_slots.pdf
    • https://s3.amazonaws.com/pajeriramal/nixugadaxosugo.pdf
    • https://s3.amazonaws.com/wovugi/what_are_the_elements_or_formula_of_discipline.pdf
    • https://uploads.strikinglycdn.com/files/05f0090f-6b1a-4bef-b9fd-707edce82da2/44334619796.pdf
    • https://s3.amazonaws.com/lebaxa/44678579330.pdf
    • https://uploads.strikinglycdn.com/files/0fab04a1-1041-4dcf-b320-283b4bc32c3f/20066911365.pdf
    • https://s3.amazonaws.com/pewibim/eclipse_2019_64_bit_windows_10.pdf
    • http://zefinut.rf.gd/wonajexolilapadaf.pdf
    • http://zedagemutumus.rf.gd/6724359523.pdf
    • https://s3.amazonaws.com/jevopemosod/19421021787.pdf
    • https://s3.amazonaws.com/zabevog/lukizitumepabujedogoduz.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_off0000f0b1.bin
6433668efc62cf0ae80c957633937ba85690e62655eef1d2dec3aec7a60f95ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B1 5560 bytes
font_01_sfnt_off00010383.bin
5d027f8ced235d929134e2348c425bdf8af998a72080101dd85d7c944d5f4e74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10383 10944 bytes
font_02_sfnt_off00012877.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12877 4324 bytes

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