Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9ec9412c6826620…

MALICIOUS

PDF

72.9 KB Created: 2020-11-12 14:41:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a590698778feffe7cd8b739c5a96db95 SHA-1: dfef43a8fb33d816d543ed7ce9efdb78f1f2a0c8 SHA-256: c9ec9412c68266200250fd346663b1645402fc141a645291f5327a40e3833c10
96 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. 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 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=chris+crocker+nude PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386336/normal_5fa35c3e63b59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383308/normal_5f99bcc4e9f07.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/nafibanefexex/auto_click_for_android_6._0.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78d112a3-ee49-4595-8f5d-5a6cd5f30eaf/promise_rings_pandora.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63a284f8-943b-4875-a109-9b008f68f566/70605805965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22d82ee5-22ac-4b90-905e-20e5557a2deb/29081071999.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87668c3a-b61e-462e-b38c-f9c98223cf42/bawotadatitozijiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5004600e-99df-4d97-b5e6-16723edce1e1/revokonasasew.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/42753163975.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fdcc485-67b0-4b54-bfe2-205716fa4a7b/saitek_keyboard_eclipse_ii.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB47 4752 bytes
SHA-256: a6114cf4b0503aa94dcef6a1525f250bdc196570895b5ab6ca6d9cb234bf31e3
font_01_sfnt_off0000db61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB61 10896 bytes
SHA-256: 2e644fa1e0f98adec4a268efce9c40c63a65b5f3b43b3f96381df9c749d21d42
font_02_sfnt_off000100a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A5 16544 bytes
SHA-256: 8d45f5f417e74c11d54eaee7138901bb4b2498e40dea16ccf89f2c2707c13e35