Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c16baf7a66b6bae…

MALICIOUS

PDF

80.4 KB Created: 2021-03-03 20:03:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 6e32c1deb3f384c0f0cdd9e483067677 SHA-1: 080ef767f174010a5f0ddd6869244ad5018a4420 SHA-256: 7c16baf7a66b6bae29d35437d97e8332869b319c6e4c953d496a7866750da409
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site, potentially leading to further compromise.

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://baarspo.ru/123?utm_term=cu%25C3%25A1les+son+los+derechos+humanos+en+colombia PDF link annotation
    • http://xodaxedepapopox.mygamesonline.org/28842054067.pdfIn PDF document text
    • https://cdn.sqhk.co/wevafofed/gcjjgyq/what_color_tube_for_bmp_labcorp.pdfIn PDF document text
    • https://cdn.sqhk.co/kovixileta/rpjfPii/splendor_translation_in_urdu.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/tekifapeluvizajoxerem.pdfIn PDF document text
    • http://skout.tech/632631136739zge1.pdfIn PDF document text
    • https://cdn.sqhk.co/xibetevoxaj/jhrieGy/92682003257.pdfIn PDF document text
    • http://cashfree.store/831067162520u9gg.pdfIn PDF document text
    • http://babysampler.com/9662773026n3d7d.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/xipavir/nurse_uniform_design_chinese_collar.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/tuvorujewiraduvumisuje.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/bezuburugolovosudodo.pdfIn PDF document text
    • http://kuxemozoxabonag.onlinewebshop.net/78791206605.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/cebuano_english_translation_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/free_linux_command_line_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/63095060976.pdfIn PDF document text
    • http://laroruteze.epizy.com/56957288091.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/greek_alphabet_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/75368231819.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/32737657305.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_off0000f21d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21D 5456 bytes
SHA-256: d9bf0058ae8c1843c4aa7959e2814738b479d5c924a9e50076de2ec485130ca0
font_01_sfnt_off000103dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103DC 1584 bytes
SHA-256: c0779dbf6e112e58dd3ef75ce297746ac830bbd9ebd9dffed3f747dd95a7da8e
font_02_sfnt_off00010bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BFA 11408 bytes
SHA-256: a2ece0ea5ffd2f753dacb25640a16e0a7a37ffce5322b78b0ccb06709ce2aad1

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