Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d306468f9df7ef4…

MALICIOUS

PDF

88.8 KB Created: 2021-05-22 22:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: a1524b000a7dce0f095976a8d4bc9f02 SHA-1: 805b6630572d8d4062dd952741922dfaefc877f0 SHA-256: 0d306468f9df7ef4427837de99892287a6a7e51df68556132e2ff1d3d1df010d
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 a suspicious domain, likely intended to host a phishing page or download further malware. The document body, though heavily obfuscated, suggests a lure related to a 'medicine progress note template', aligning with phishing tactics.

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://botokaw.ru/strik?utm_term=medicine+progress+note+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4462362/normal_6039465cb7966.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406169/normal_5fd31bcd13c31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_601cf92e33f6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445320/normal_60260ab99419f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499636/normal_6050fc7917c2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452392/normal_603e2ad57154d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461497/normal_60307f8feda20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450249/normal_6033d2541edac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447467/normal_60371689b573e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373520/normal_60199f7276e32.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/informatii_despre_angiosperme_monocotiledonate.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/free_audacity_lame_enc_dll.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/sample_application_letter_format.pdfIn PDF document text
    • https://s3.amazonaws.com/wemofodi/importance_of_liberal_education.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/blunders_crossword_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/dark_souls_2_bosses_ranked_worst_to_best.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/acorn_superglide_120_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/math_worksheet_for_3_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/fativ.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/how_to_prepare_for_navy_eod_training.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/wapking._cc_serial_songs.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_off00010209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10209 7732 bytes
SHA-256: e86ed2de374d8da38882ccca5be19335d3e05bf6fb798a18509b7041dcfed024
font_01_sfnt_off00011bc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BC9 5396 bytes
SHA-256: 0e6567eeebc542ab8075023afe37578c46186f84888090dbccd034a6f62b162e
font_02_sfnt_off00012e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E17 11296 bytes
SHA-256: ad66cfb0d5ad5160278b5848a1573ec066d563f61812a396c3ca845681fce3ee

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