Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c162b6f46744b17…

MALICIOUS

PDF

93.3 KB Created: 2021-05-06 09:07:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 9460ca9ee22cb1f3ab039f0a2dea8f40 SHA-1: 984b4de7b662d1556b6be12cf2400dc9f95fef1a SHA-256: 8c162b6f46744b17cb6a428b94ae4b91192875ecf3babcf6ed10c69fa83cc2a7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to subpoenas, suggesting a phishing lure.

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://gimoguvi.ru/strik?utm_term=what+is+a+civil+process+subpoena PDF link annotation
    • http://vevujegijozu.iblogger.org/36766305532.pdfIn PDF document text
    • https://cdn.sqhk.co/batitiviz/g3Ghb3q/download_ninja_warrior_shadow_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/kezomerameki/dgEgkx1/indycar_2019_schedule_download.pdfIn PDF document text
    • http://waxevamebe.22web.org/vagaserijijizotemewojagi.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/b1jfkha/lilapoxij.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/going_back_to_my_roots_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b2cef9a-764d-4201-ae92-013df81a5f85/complete_comptia_a_guide_to_it_hardware_and_software_7th_edition.pdfIn PDF document text
    • http://janabamimis.rf.gd/ps4_eject_screw_not_tightening.pdfIn PDF document text
    • http://porojerosisogu.rf.gd/kisimesimepojudujafumosij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d2d3135-3f24-46d7-99fa-a835abbe3032/what_is_primary_deviance_criminology.pdfIn PDF document text
    • https://s3.amazonaws.com/rizoli/76380187714.pdfIn PDF document text
    • https://c18d9829-3add-4afa-bc87-35007fe3998a.filesusr.com/ugd/70c1ec_90c7d491cca74ef8ab533bf151bd6cdb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/72400543178.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/32948022282.pdfIn PDF document text
    • http://rekujub.rf.gd/attack_on_titan_anime_ending_date.pdfIn PDF document text
    • https://88211235-bf86-4d40-a6ec-a052db2f682e.filesusr.com/ugd/94e5ef_132da234f5bd41cfa88cf24956f94912.pdf?index=trueIn PDF document text
    • http://xatonerux.epizy.com/how_to_be_a_conversationalist.pdfIn PDF document text
    • https://91ca87c2-c493-4616-adaa-fbcec45394e1.filesusr.com/ugd/6116da_317aca25ae454d88ac37ba1ac2c6c390.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/70ff0179-2f3f-4aff-b0da-d10540ae8b75/2007_honda_civic_repair_manual.pdfIn PDF document text
    • https://d19688e0-347f-4d9d-8cb3-d47c6e049f3d.filesusr.com/ugd/c618e9_c41f0f9bc1484cad8c8f2053c3c0dd67.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/juposaluduxezek.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000121d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121D9 5116 bytes
SHA-256: 95fffad47fbf190d8fbccfb4722bf5ba2b3104a3bd50ef49761dcf73fe8f5ec3
font_01_sfnt_off00013340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13340 11184 bytes
SHA-256: 97fff738e81564d9d673098272f10c304bf145f1613b4ad7e8d61eeecac70f4f
font_02_sfnt_off0001596e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1596E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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