Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b8dc2813714ae2d…

MALICIOUS

PDF

80.1 KB Created: 2021-03-03 07:34:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: da8192bd4f11d3bb3aaae4aafe05c386 SHA-1: 72e009888dc4c9d82303e7ac9357eaf3bc54af3c SHA-256: 0b8dc2813714ae2de5516e54eda6c89ac79caf316fdab35484ef1f140ed8a6af
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing or malware distribution. The document body is heavily obfuscated, but the presence of the external URI heuristic and the ClamAV detection strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kuzutuzo.ru/strik?utm_term=kenneth+hagin+hindrances+to+healing+youtube PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461791/normal_60173fb2d6e27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414334/normal_603edb3d8668e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420025/normal_5ff468a2888da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454420/normal_603412833e181.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414353/normal_5fe041c878dea.pdfIn PDF document text
    • https://cdn.sqhk.co/nunewole/hbrIwie/the_sims_tm_mobile_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410186/normal_5fcc3bd7b897e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488582/normal_5ff34aba3f6aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460963/normal_601e06a700c8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505102/normal_603b249cd634b.pdfIn PDF document text
    • https://cdn.sqhk.co/munuzimevu/zpRq7jd/70899955149.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415543/normal_6028e6ed1183e.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/biacmhi/draw_a_stickman_color_buddies.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://lusiromipu.epizy.com/what_are_sorcery_points.pdfIn PDF document text
    • http://parepakikil.epizy.com/65076084139.pdfIn PDF document text
    • http://wusanobe.rf.gd/zobimikukelire.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_off0000ee6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6C 5292 bytes
SHA-256: 55e87ed6f6f27618d9d2c0d2db1ac01cc96bec297db2eb68b8297c5a91349c2c
font_01_sfnt_off00010065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10065 10588 bytes
SHA-256: 5519ab723650c8ae655cfaa0797ce9b9180103f5dba2c585ad7d1f871ea08a6f
font_02_sfnt_off000124b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124B4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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