Malicious PDF — malware analysis report

Static analysis result for SHA-256 69237299a6385297…

MALICIOUS

PDF

85.8 KB Created: 2021-04-20 15:54:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bd29e894361343786a2aa5b9e02d30a SHA-1: dd6d66e11cad3d6130a08f853d487c23ada3d413 SHA-256: 69237299a6385297378ddbf4c7b328a74649f1f371472c3fdfd286d7ad09329b
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://zajinet.ru/strik?utm_term=york+furnace+parts', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains keywords related to 'York furnace parts', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://zajinet.ru/strik?utm_term=york+furnace+parts
    • https://cdn-cms.f-static.net/uploads/4411500/normal_601092e09f8bf.pdf
    • https://cdn.sqhk.co/jasurisunav/ljdfGhd/67945553956.pdf
    • https://cdn.sqhk.co/resesexiraf/gjha7FS/24448317979.pdf
    • https://cdn.sqhk.co/zavipudajose/Hig6gdC/metal_gear_solid_3_rambo.pdf
    • https://cdn.sqhk.co/mepowokugo/hfsVgf2/banana_kong_2.pdf
    • https://cdn-cms.f-static.net/uploads/4482216/normal_6062f3936cdf6.pdf
    • https://cdn-cms.f-static.net/uploads/4463300/normal_5fd9b7fa1a2f7.pdf
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdf
    • https://static.s123-cdn-static.com/uploads/4407733/normal_600338b9cf607.pdf
    • http://javaxirivibewi.mygamesonline.org/wukigonenuw.pdf
    • http://bizbize-yeteriz.org/tamil_songs_violin_sheet_musicl7p23.pdf
    • https://static.s123-cdn-static.com/uploads/4454425/normal_6007ac7adbf48.pdf
    • https://cdn.sqhk.co/sibamoxa/h6QhcaF/gomukibiwelopi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d3797ec6-fb63-452a-9aa1-66c782dcd4d2/what_are_grey_rgb_values.pdf
    • https://uploads.strikinglycdn.com/files/3032d7af-334f-4f4c-8619-735e1663ab2d/fibidotuzotugikipa.pdf
    • https://uploads.strikinglycdn.com/files/d360e801-7792-43e8-8204-d8af47e69ed3/dungeons_and_dragons_rpg_de_mesa_online.pdf
    • https://uploads.strikinglycdn.com/files/b775b524-d3bc-4f20-ae86-2f9249c12382/hl_l2360dw_toner.pdf
    • https://uploads.strikinglycdn.com/files/5975d55d-52db-4a15-8461-7c525889d6fb/vajitoxoserumijig.pdf
    • https://uploads.strikinglycdn.com/files/7bcf5840-1d3f-4d93-b317-415d59775050/29110143570.pdf
    • http://raxegujanamefas.atwebpages.com/tigazanopav.pdf
    • http://pimoxonevuwewax.atwebpages.com/grammar_lessons_for_intermediate_esl_students.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fca0.bin
baaf5ed93cdfd599d445503978341d83274400ebf668eaf8012f1374dbfebaa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA0 5000 bytes
font_01_sfnt_off00010db6.bin
bedb04506d8306ddccdcd6fb9f5762b1e27458e3924722c1ce0cb8612b722ef8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB6 11508 bytes
font_02_sfnt_off00013515.bin
e7273338525a866f49bd556f13a0e46ce1e8513f85f175d9d987aa1f8b89adb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13515 16068 bytes

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