Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c6e40b577f96656…

MALICIOUS

PDF

69.1 KB Created: 2020-12-19 13:18:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1e4dd27ced4885d2cde0062c0b9e2a8a SHA-1: dff75285c22c028b52890e3a74ee6c94811e1bf9 SHA-256: 4c6e40b577f9665643dc2e27ad7ab006fe72146e79c7c4f7f780fd9f3fede636
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URL that leads to a page discussing a 'yeast infection test kit for males', suggesting a phishing or scam attempt. ClamAV detection and ML classification strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic point towards a malicious document, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/123?utm_term=yeast+infection+test+kit+for+males PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4403271/normal_5fc3cd1978ea4.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/felasorarabipis/satedavaz.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/graphene_nanomaterials_fabrication_properties_and_applications.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/acetone_safety_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/fotomajupabote.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc362e5c30a162e0c62626b/t/5fd21ca5ebc7ce75e8ba0977/1607605419329/xanijix.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/kayle_jg_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d74d8a81-877c-4254-866c-8c19615c5892/solving_two_step_inequalities_worksheet_maneuvering_the_middle.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3c4acb3e0f57711a6fc4/1606302795016/ropexagazaxaguzologasip.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/vogitufalavuruguveguzarag.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/96697759956.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/eddie_sergey_15_minute_manifestation.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdcb8173599a867de449200/t/5fdcdb78db55d2402930376d/1608309625265/37030058672.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b5ea81fec0096843efbb/t/5fcab2f1c86a9632fae1d7dc/1607119601701/72648597432.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/casio_g_shock_tide_watch_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/zanufofabad.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_off0000d1bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BD 5052 bytes
SHA-256: f6bba6d4765aa26418c04695d17585f628765765e255aed981e141e7d6e9026e
font_01_sfnt_off0000e2da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DA 11128 bytes
SHA-256: 0ea7a7cfe8f79ab15e0651af2e38f3828edb2c59cca8dcc1e988ee398cd48497

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