Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9ef359f77d7f433…

MALICIOUS

PDF

65.2 KB Created: 2021-02-19 05:43:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7685a333d93d6642616531f2d329fed7 SHA-1: afb82edef06f9d16c226cf93b03f30fc6221dee8 SHA-256: d9ef359f77d7f43395b7c6bc201e1df4f532773f5699ea67a4cd5b911906cb07
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 0.9998

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://seumenha.ru/123?utm_term=vizio+e601i-a3+netflix+not+working PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426953/normal_5ff0c4c88d23a.pdfIn PDF document text
    • https://cdn.sqhk.co/vawapisoxe/8x06h2Z/vaxujanava.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445892/normal_5fe1a2c954718.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373782/normal_5ff98033e41ce.pdfIn PDF document text
    • http://gelivebun.22web.org/amphibians_classification.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427284/normal_6013e9466a2d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385847/normal_60098ecf8464d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446647/normal_5fceab39d077a.pdfIn PDF document text
    • http://gekigowegijuvo.22web.org/mdbootstrap_pro_templates.pdfIn PDF document text
    • https://cdn.sqhk.co/gulifunanale/2BE9k1S/best_ps1_games_for_android_emulator.pdfIn PDF document text
    • https://cdn.sqhk.co/kusedesomawa/iiK6zjj/gijedotewuvogen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449974/normal_5ff3e9f0ce08c.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/midaguvimabof/28577136143.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/98892120155.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/ch_play_apk_android_7._0.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/chinese_visa_form_thailand.pdfIn PDF document text
    • http://mujaxeb.rf.gd/varepezikamobipa.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/new_business_announcement_email_templates.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC182 5540 bytes
SHA-256: 1f1bd14820a22b3df6c8e6a31d6ee6824984514813ea53bab85f435aa2ad92dd
font_01_sfnt_off0000d4ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AC 10248 bytes
SHA-256: f58dbe397213c8bc5fa15ba171abc45dfa45c54aacabc6dbad196b222624448b

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