Malicious PDF — malware analysis report

Static analysis result for SHA-256 14cb9de1a072a58a…

MALICIOUS

PDF

75.1 KB Created: 2021-01-11 09:06:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8cc940a3aa40c9684d9a6ebb819b0899 SHA-1: 80951b9ab289c743bde4a78a0428a822311f21ea SHA-256: 14cb9de1a072a58a1fde2eb141e7a84afe2f00166e0aced32c4f7481d820d557
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://trafftec.ru/123?utm_term=boy+l+names+for+dogs PDF link annotation
    • https://cdn.sqhk.co/tatiderubota/1jhhfDU/57894073735.pdfIn PDF document text
    • https://cdn.sqhk.co/favejofu/GIbjdLA/top_10_music_charts_this_week_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/kesusevuzep/hjUhjeZ/31885556130.pdfIn PDF document text
    • https://cdn.sqhk.co/duvapegoleva/5aheOGs/61506429770.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/tipikaxe/zusas.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/12006337349.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/divobupalujugikuf.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/zamarumusatiwiterup.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/47418634134.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/free_wallpaper_black_heart.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/99521708962.pdfIn PDF document text
    • https://s3.amazonaws.com/popagexexoza/dynamic_equilibrium_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/anjali_geethanjali_kannada_songs_free.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_off0000e716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE716 5376 bytes
SHA-256: 55fa2ab30f43239d134e250dc4512f8dfacc05aa9493b531506a46d114df5634
font_01_sfnt_off0000f958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF958 11184 bytes
SHA-256: 715c4d9cfa4e7b411017a0b4d58fd2f3a996e3718704fba0115e62e43771f1fb

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