Malicious PDF — malware analysis report

Static analysis result for SHA-256 d65e7d9f72f1844c…

MALICIOUS

PDF

80.9 KB Created: 2021-05-05 18:08:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 50d74bfe2193d572af4bf0b9a4741924 SHA-1: 211404c90fd786d4abf482390c6b4f3dec0ea144 SHA-256: d65e7d9f72f1844c2db3c770395c42068a6fdbf8f20613b21df437a931047138
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of embedded URLs suggests an attempt to redirect the user to external, potentially malicious sites. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are commonly used for phishing or distributing further malware, aligning with the Spearphishing Attachment technique.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://cdn.sqhk.co/vobipibomuk/7GhbO4h/tmnt_rooftop_run_rexdl.pdf In PDF document text
    • http://xibiselid.medianewsonline.com/biological_science_textbook.pdfIn PDF document text
    • https://cdn.sqhk.co/toxodabatot/iejahgS/xakepezisovomo.pdfIn PDF document text
    • http://foselosen.sportsontheweb.net/gerudad.pdfIn PDF document text
    • http://labebatazavanoz.mygamesonline.org/vapor_compression_refrigeration_cycle_calculation.pdfIn PDF document text
    • https://cdn.sqhk.co/panazomuv/icPF1hf/70805540839.pdfIn PDF document text
    • http://ranupila.mywebcommunity.org/kavanoxaderelaraxejukevet.pdfIn PDF document text
    • https://cdn.sqhk.co/timadupak/fjggd6G/malosubowo.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
    • http://feedproxy.google.com/~r/wb/ENAH/~3/n4t4wXRn-MA/wb?keyword=2008%20ford%20escape%20front%20caliper%20stickingPDF link annotation
    • https://98cdd5c5-c43e-49eb-9373-39517e896cbb.filesusr.com/ugd/90661f_e7e7efa40af04775bd8f786d1cba77d5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/70a3713c-f0e7-4618-a775-0f0a72950b16/gukixise.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/emulator_android_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9d44f9d-14c2-40da-9a80-dc5c31590abe/86480293706.pdfIn PDF document text
    • https://19508648-7f28-415f-8121-b57715dc1465.filesusr.com/ugd/9734e7_cdca065c4a2a438bb631e76b5a016182.pdf?index=trueIn PDF document text
    • http://gajamozaxekega.atwebpages.com/barbiturates_mechanism_of_action.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5ac9728-2eb3-4464-b8f8-cfb9c31192b8/culpa_de_la_vaca_en_ingles.pdfIn PDF document text
    • https://ad177677-9664-42cd-9bf2-17a10eef6e1d.filesusr.com/ugd/f8915e_1bf37bbf3a1c4958bb9eb5c75572c12e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/47153ff0-68ae-419b-a6a5-d0e8088563e1/76484106076.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/maplestory_2_knight_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/resumen_acuerdo_de_paz_en_colombia.pdfIn PDF document text
    • https://acaa17bf-cf2e-4132-a9e9-810271eb8bc4.filesusr.com/ugd/ab5b4c_83bb18c6989f4501b1ec85a812309ce1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/prince_william_county_circuit_court_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/86794315126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18f6933e-7df8-4bca-8514-a3510fe38562/lost_in_yonkers_script.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/debeterazoparova.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/vcloudpoint_s100_manual.pdfIn PDF document text
    • https://793776f3-68b4-44d3-947a-596ce2c6f652.filesusr.com/ugd/4e977a_89b24ce0f6e54a6e89cb247a4d71d38e.pdf?index=trueIn 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_off0000ef14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF14 5548 bytes
SHA-256: d50823476778a7f65c239dd2faa9a5469ae1af3e61bfa7258ead80280bb64076
font_01_sfnt_off000101ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101EE 10504 bytes
SHA-256: 6fa7335dfe7a0a218c4e0ad7e9e38e28b38763475bb9fed528a53f5e506e2d97
font_02_sfnt_off000125ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125ED 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd