Malicious PDF — malware analysis report

Static analysis result for SHA-256 968917cd100700d8…

MALICIOUS

PDF

70.8 KB Created: 2021-01-04 02:18:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f2d217af275db5e400a8530a017851a SHA-1: 9276fa4857be08129fadb8695c80de1b8dfe307c SHA-256: 968917cd100700d8ee6fa71654d41cea0b52f25a6e2f9dbf696e34b6d7468868
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, likely for phishing purposes. Although no scripts were explicitly extracted, the PDF structure and the presence of embedded URIs suggest it is designed to redirect users to a malicious site, potentially for credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/123?utm_term=hampton+bay+replacement+cushions+covers
    • https://cdn-cms.f-static.net/uploads/4447626/normal_5fd6fcab87562.pdf
    • https://cdn-cms.f-static.net/uploads/4456134/normal_5fa14bbd0af86.pdf
    • https://cdn-cms.f-static.net/uploads/4454825/normal_5fd68b45de9d8.pdf
    • https://static.s123-cdn-static.com/uploads/4488135/normal_5fcf3e7b41ec9.pdf
    • https://cdn.sqhk.co/megilujij/hblAPhh/spinner._io_game_free_online.pdf
    • https://cdn-cms.f-static.net/uploads/4446155/normal_5fa9123bc037b.pdf
    • https://cdn.sqhk.co/pufowuvikij/VLnseav/94680273687.pdf
    • https://cdn-cms.f-static.net/uploads/4370740/normal_5f9612282be59.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/mesixadelomomo/70155560944.pdf
    • https://s3.amazonaws.com/vipuxafol/filum_anelidos.pdf
    • https://s3.amazonaws.com/pibabopuduj/77124959193.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca4f.bin
ae4791254162a46683b62eb916f31646202e1ac58b728534d73eefb65f45fa47		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA4F 5320 bytes
font_01_sfnt_off0000dc32.bin
77a01969b054db2c519ed98987c71b60ed0adb1b5394b0103ff35820f8e3da23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC32 10576 bytes
font_02_sfnt_off00010022.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10022 4324 bytes

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