Malicious PDF — malware analysis report

Static analysis result for SHA-256 edcb492ac2a47514…

MALICIOUS

PDF

72.4 KB Created: 2021-01-06 23:43:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9c6acb3de1baa813ce1a80ba1f67ab3a SHA-1: 01347eabbafaa0b53e498fecb52c3aed051b7624 SHA-256: edcb492ac2a4751482e3b20506ad48f2f15d6a8f27f78bd26444bba1618d6140
104 Risk Score
Tags
free-cdn-ebook-manual-lure

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 invoice-themed 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 0.9997

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://traffset.ru/123?utm_term=itemized+receipt+in+spanish PDF link annotation
    • https://cdn.sqhk.co/xuxozowaki/jGAQgd2/98510022875.pdfIn PDF document text
    • https://cdn.sqhk.co/wolitobutak/Sygdcjg/drive_ahead_apk_all_unlocked.pdfIn PDF document text
    • https://cdn.sqhk.co/vekasurox/idoiihc/lejowakow.pdfIn PDF document text
    • https://cdn.sqhk.co/gukawaki/gfoicQK/sing_karaoke_by_smule_pc_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nonuripot/UlBMicC/94872906828.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/4b8a7c73-4413-4778-9338-b0363bd6faff/sepuwowez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b960369-6c41-4071-8b8c-d916abfc24be/67428200172.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f492d5f-6218-4113-8d92-a2ba04797b81/xujomawej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfa46ba3-6039-47a3-a751-4617772141d8/75249456241.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28f64c9e-ae37-4fb8-8cfb-1d0ea8708034/ketaxulotebewe.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/91845620981.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/756416c0-0968-4ba6-84e9-f4f0b06eda29/21360065262.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eb83f63-ffd6-4a42-aa12-2448245a08bd/among_us_video_game_xbox.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC949 5268 bytes
SHA-256: 0c44f4300996abddcfd814bdcdfdd02450e01713ef7d1abec3f049e410f84f7b
font_01_sfnt_off0000db0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0B 10568 bytes
SHA-256: c0bc400731cc5b06670257767ec3bdf841934023587b52c99ca78e200a3112c7
font_02_sfnt_off0000ff5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF5C 16096 bytes
SHA-256: 61761e6c71fdd980502ce8a3a8cbf9590216241eb9eabe72fdf309a1c23cd3c2

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