Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a34ffc6d808b23e…

MALICIOUS

PDF

80.4 KB Created: 2021-03-28 20:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04491cf6a103ee639bee271250a25327 SHA-1: 5f7271ffc9a21bded390fbec77bd1235efc55df8 SHA-256: 5a34ffc6d808b23eb0c03c3607a19e3fcf1d3e3e6b2dbf03ec319fd7cb731efc
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'zajinet.ru', which is suspicious. While no scripts were explicitly extracted, the presence of embedded URLs suggests an attempt to redirect the user to external resources, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://zajinet.ru/wix?keyword=dubai+drift+2+mod+apk+2.5.2+all+cars+unlocked
    • https://cdn.sqhk.co/fasisela/7rhiu8C/rapid_vocabulary_builder_norman_lewis_download.pdf
    • http://jakartapro.xyz/simpson_professional_pressure_washer_3300_psi_manualsdbvo.pdf
    • https://saletenabij.weebly.com/uploads/1/3/4/3/134339554/ed4d7.pdf
    • http://vuletotam.scienceontheweb.net/12059242171.pdf
    • https://cdn.sqhk.co/dorumexogik/Fvjggdj/the_tiger_rising_read_aloud_chapter_5.pdf
    • https://cdn.sqhk.co/gabebutiz/ijjdiak/celtic_news_now_janefield_street.pdf
    • http://katipef.medianewsonline.com/again_but_better_book.pdf
    • https://jovimujokuva.weebly.com/uploads/1/3/2/6/132695493/5687871.pdf
    • https://cdn.sqhk.co/turanexode/jOjgjgl/bewafulin.pdf
    • https://cdn.sqhk.co/vuvesanap/idhcje6/ace_stream_engine_for_android_tv_apk.pdf
    • http://pobesegu.scienceontheweb.net/57275135122.pdf
    • http://shopsupergood.site/jbl_flip_3_battery_lifev8pci.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5215c309-9e69-4f73-ae94-ad2ab3aafc74/where_can_i_buy_lg_washing_machine_parts.pdf
    • https://s3.amazonaws.com/xufaxoferugod/weather_report_cape_town_next_10_days.pdf
    • http://gixejemazob.myartsonline.com/jafarimoxexerozatepikew.pdf
    • https://s3.amazonaws.com/zagapaxa/beauty_camera_app_for_android.pdf
    • https://uploads.strikinglycdn.com/files/f2600cab-8fa2-427b-b498-dba6a41c72fa/how_to_calculate_real_gdp_per_capita_growth_rate.pdf
    • https://s3.amazonaws.com/safenalavojuwu/how_much_does_adobe_illustrator_cost_uk.pdf
    • https://uploads.strikinglycdn.com/files/433cbf85-6f2d-4f79-a60d-48b4fbcd911c/milujowepavegorugirav.pdf
    • http://bexovivuvere.myartsonline.com/xebileva.pdf
    • https://s3.amazonaws.com/fibesezati/financial_report_analysis_meaning.pdf
    • https://uploads.strikinglycdn.com/files/fdc79a7a-3573-4736-81ce-d067dd6c40cd/bewofomu.pdf
    • https://s3.amazonaws.com/wofaxil/majupenatowugegorozo.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_off0000f2b3.bin
a41846cfada0b66b582afd7496597239c4459c13de3165abfb63c86ebd1545ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B3 5792 bytes
font_01_sfnt_off00010661.bin
675df983ae86fd1788b58e10279469c35581c1d4111fcec028b60930472c66ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10661 18756 bytes

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