Malicious PDF — malware analysis report

Static analysis result for SHA-256 237baa4970bda1dc…

MALICIOUS

PDF

95.0 KB Created: 2021-03-22 10:13:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 796ec9c4fa34e4c928ad0abbddb0e2a3 SHA-1: 2411c45c9c129aa358a9db548ef192c23e7111f7 SHA-256: 237baa4970bda1dc94ab71d369c748c58b07b6a63269f17d51411e3cda4ff25b
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'xezojetit.ru', which is likely the source of a secondary payload. The document body, though partially corrupted, suggests a lure related to 'lyrics in telugu pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/award?keyword=kakad+aarti+lyrics+in+telugu+pdf PDF link annotation
    • http://item-get.top/important_days_in_world_historyb7930.pdfIn PDF document text
    • https://cdn.sqhk.co/kojagopomon/gqjdyij/93565002345.pdfIn PDF document text
    • https://cdn.sqhk.co/kegetaxob/30iaidR/gadewalovazawifefukebu.pdfIn PDF document text
    • https://cdn.sqhk.co/vopuvafamiw/Figifgg/25233095188.pdfIn PDF document text
    • https://cdn.sqhk.co/pafevola/gjb5gic/mercedes_benz_e_class_2018_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/vujaderaz/WjiGhbT/farm_harvest_3_match_3_game.pdfIn PDF document text
    • http://disconto50.info/59091167895ugfm7.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/ig6okfP/color_4_passion_twist.pdfIn PDF document text
    • http://salea.site/live_wallpapers_hd_backgrounds_4k_3d_wallooptmp4mqc.pdfIn PDF document text
    • https://cdn.sqhk.co/gavezexu/gclhcgd/idle_heroes_redeem_codes_2020_june.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/99b9355a-7e0c-4183-adc9-f9b803ae96df/xejoxitufevatowaka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e677ae63-d688-47c5-8e59-9c4253563d69/kung_fu_panda_2008_trailer_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27f1f3f4-92d4-4b49-8d12-55c101d63f73/el_proceso_de_investigacin_cualitativo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d213e297-5b0d-4ad0-a18e-c61d2e80dc96/pixekawunefazopoxugobepin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ef66b1d-9bc5-46ce-97af-445806f32534/yo_tengo_tu_amor_google_translate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76173819-82bd-4804-85a0-d2877aac0fcf/popstar_never_stop_never_stopping_streaming_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8e8cec4-90a9-42d1-8ee3-ba32853051e9/how_to_increase_brightness_in_casio_fx_991ms.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/81322983469.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/89132742357.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdcc0d44-7bf7-4fe4-b606-95f06ebaf2b1/62176265112.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca19b028-90af-4237-8461-81bd6c5c470f/zojirushi_rice_cooker_timer_not_working.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000138a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138A4 5456 bytes
SHA-256: a7dc25d688066dff2c50ebc5d16f05e873b58e986e852b5795a63daff4082d35
font_01_sfnt_off00014b54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B54 10484 bytes
SHA-256: b1bcaa114a2e2cd4c591fec21bca72d5f21a502092e912179c8a6f1661677fdd

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