Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fb477843fb460be…

MALICIOUS

PDF

71.7 KB Created: 2020-11-17 14:58:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: bef84de82f40f1a8485bccaeb7003f7a SHA-1: 2a48488b2e27b4bfc9232de862cf8d6ada756473 SHA-256: 1fb477843fb460be8bfa94f873ed1a272c705d5e09073eb468c43bcfa6b70421
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 0.9997

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://traffine.ru/123?utm_term=big+sur+guide+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379602/normal_5fa1cbe2a1d50.pdfIn PDF document text
    • https://belafawejogawol.weebly.com/uploads/1/3/4/5/134583754/jakadaworulozazur.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/5a517e18f81e5.pdfIn PDF document text
    • https://dawerofe.weebly.com/uploads/1/3/4/3/134361643/sisibojozemuw-zikawofedet.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/godewumazek/23471141732.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/87492331616.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/60456131459.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/i_doser_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/71368041679.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a2f6fd4-04c3-4920-b9c2-8c65c56b667e/13499234891.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/27709239492.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_off0000dd06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD06 5016 bytes
SHA-256: 020f010bf89dbb1b54f562e154fc60b02bcf333585e63c7face7483f8f10a9a6
font_01_sfnt_off0000ee34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE34 10748 bytes
SHA-256: 71030f0a64a67de870f5db5472aa035baa0f7535ff1603cf557905ab95aded5f

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