Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a0af50fa7317534…

MALICIOUS

PDF

88.5 KB Created: 2021-01-01 11:49:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 866719f67f559ffde9b2987341e744fc SHA-1: 968acc6ff12f5263d7b60309523eb81b32298c67 SHA-256: 4a0af50fa7317534dff5996caf9b0d9ca0c3a1c33155316a63b280a252271923
96 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. 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 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=oxygenos+adaptive+icon+packs PDF link annotation
    • https://cdn.sqhk.co/kowalaxu/hhgghdS/formula_to_change_pounds_to_ounces.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404515/normal_5fa09b30e0a42.pdfIn PDF document text
    • https://cdn.sqhk.co/totuzilexif/hvhcWEP/zobuwa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387929/normal_5fcbcbd3cd0d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380383/normal_5feb5c8c46988.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415739/normal_5fb88c19d8cb9.pdfIn PDF document text
    • https://cdn.sqhk.co/zibusisujij/jeVjcEa/72977466073.pdfIn PDF document text
    • https://cdn.sqhk.co/linerutinew/ohg0fie/35531934445.pdfIn PDF document text
    • https://cdn.sqhk.co/kurapobal/1TIibe7/58315674536.pdfIn PDF document text
    • https://cdn.sqhk.co/wevujawej/LfQ0qgj/lagosaz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407724/normal_5fcf59a63c601.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500674/normal_5feb5f3cc2b8c.pdfIn PDF document text
    • https://cdn.sqhk.co/samigimas/SOLQVhc/to_the_moon_phora.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/205b4105-5f26-406e-abbe-ae5849db02c4/baxun.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/remote_control_for_tv_apk.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0D 5436 bytes
SHA-256: 84e0a20e31e99c226cadd59a7d81ee53553e5f68aa3dc0f3023bc529357c80a4
font_01_sfnt_off000100b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B0 3052 bytes
SHA-256: 71b3b8df5bbef0f39ff630fe94e86da91544b1408c0a93b54c4dcaad9a06b33c
font_02_sfnt_off00010d65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D65 11620 bytes
SHA-256: f0cbc81198f2a6989cb8915d78b5f13081bf7b7c4ee1e78a7d58f38ef975bddb
font_03_sfnt_off00013537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13537 16860 bytes
SHA-256: dea25426b4ef00d9538d16a51bd1e90d000cfb6f9fa605336548efc5714902d7
font_04_sfnt_off00014c47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C47 1736 bytes
SHA-256: 0d9b6ab0354368cdfa5a4e52e4dfb250ede80cec4283e48fafec0a3c1c1d30df

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