Malicious PDF — malware analysis report

Static analysis result for SHA-256 61e63e5cacad52e5…

MALICIOUS

PDF

81.7 KB Created: 2021-04-03 03:55:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 2507a15e9fa3880591e9a672a644d22e SHA-1: 1312d4a99aa4482a4b4d24830b18c7c889085a49 SHA-256: 61e63e5cacad52e5b67469564fd9fa049131eca660a164826767e968bca2b27c
104 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified as a phishing lure by heuristics. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://vilenefex.ru/123?utm_term=curso+de+piscicultura+gratis+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484631/normal_605644aa4ddc4.pdfIn PDF document text
    • http://lakegefufen.scienceontheweb.net/goguvuwosukekilulagiwixo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463034/normal_5fda39593029a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464072/normal_5fdc6acc1d5df.pdfIn PDF document text
    • http://vozivovog.scienceontheweb.net/fakowixobevuvozawilupobe.pdfIn PDF document text
    • http://jinobuzid.scienceontheweb.net/sed_and_awk_programming.pdfIn PDF document text
    • http://lugabev.mygamesonline.org/68865445455.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407303/normal_6036761875bd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379719/normal_604860ee8dc48.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/18010e93-cd7a-4f06-9dfd-451a9888e4b8/nikaboru.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/platform_bed_with_drawers_queen.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/adonit_pixel_stylus_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/fixed_assets_on_balance_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/past_and_past_participle_forms_of_burst.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/divebavidadaxugonezarewe.pdfIn PDF document text
    • http://jubogaju.atwebpages.com/diagnostic_bacteriology.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/nuguxetasudariwevasuga.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/how_to_connect_thich_nhat_hanh.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/tosusawulijoliseveno.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/valaporejixufolozixo.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/converting_mp4_to_itunes_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b36a1fa-33d7-4485-b31e-b36fef6888a4/massey_ferguson_135_price_in_pakistan.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_off0000fce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE7 5228 bytes
SHA-256: 22f3d5b1d2ad38983f0f21481d242ddedb3e7b850ecc30cac2f1cc3eb07aaff5
font_01_sfnt_off00010ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EBF 12988 bytes
SHA-256: 5003f1c46d6f2ef7a13ba4fccab1d6a40adaa8756053d198baff0bf7269e277d

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