Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ae71fb493826e3…

MALICIOUS

PDF

73.1 KB Created: 2021-03-10 02:22:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: bcecc29d503bc54e591a32dbd22c5b86 SHA-1: 02756f60a031721041131c454a167d7221dd3f39 SHA-256: 80ae71fb493826e3e08acd23b3bb01b5c02c8c293bef87e8dea2f23463202cbc
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, specifically identified as a phishing trojan. The document body, though heavily obfuscated, contains references to a "boat bill of sale template free pdf" and an external URI pointing to a URL that likely serves the malicious payload. This suggests a phishing attempt to trick users into downloading a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/award?keyword=boat+bill+of+sale+template+free+pdf PDF link annotation
    • https://wunovolal.weebly.com/uploads/1/3/5/3/135311751/foredabu.pdfIn PDF document text
    • http://fukerijinexin.mygamesonline.org/fazatujita.pdfIn PDF document text
    • http://modalidetefid.iblogger.org/71009850317.pdfIn PDF document text
    • https://jematujevuzonip.weebly.com/uploads/1/3/4/2/134235480/5dc59afac1305.pdfIn PDF document text
    • https://dalupapixoriwu.weebly.com/uploads/1/3/1/4/131438121/02323b6a.pdfIn PDF document text
    • https://liruviwogaralo.weebly.com/uploads/1/3/0/7/130776788/beguvesevenutep.pdfIn PDF document text
    • http://durikudu.iblogger.org/list_of_functional_groups_in_organic_chemistry.pdfIn PDF document text
    • http://bifakibebus.iblogger.org/eagles_wasted_time_lyrics_meaning.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/ccb7fbb2-d8b6-455a-a792-146a896ff960/51873193461.pdfIn PDF document text
    • https://s3.amazonaws.com/jugobimuraje/latest_android_version_samsung_mobile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13e4b4bf-541d-4c87-b526-61a899e0a406/40742719400.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/flight_pilot_simulator_3d_apk_full.pdfIn PDF document text
    • http://zatejufeg.rf.gd/97947679371.pdfIn PDF document text
    • http://fezapemiker.epizy.com/barclays_app_android_10_update.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/74990619646.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c266c59-f36d-4859-9771-2650c327c49e/46432985624.pdfIn PDF document text
    • http://subedawulowuwo.epizy.com/wow_classic_engineering_guide_goblin_or_gnomish.pdfIn PDF document text
    • http://nakarajibap.myartsonline.com/pdf_buku_agama_hindu_kelas_12_kurikulum_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/capriccio_italien_cello_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95e26b8a-bae8-49ca-bd12-f4b9f61640a4/ar_15_gun_case_hard.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/mental_addition_and_subtraction_worksheets_ks2.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_off0000e0d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D7 5376 bytes
SHA-256: 9043621b61490d428eaeb8e925098152c0c8f4a9e71cd81dfc5bc16cd0105923
font_01_sfnt_off0000f303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF303 10536 bytes
SHA-256: 6b2d34caec148c5642f711d72b873662ee945df3e6f0c3b42dd99a0f5cce8656

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