Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b35719fd6bf940f…

MALICIOUS

PDF

68.4 KB Created: 2021-02-15 22:12:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3ef52f29614f12fb007959beec99e1ca SHA-1: 9bb81e7492680ca3eecdf50c1d34404cf8897c43 SHA-256: 8b35719fd6bf940fcbf0e807d1f195d9a3002e88309486af4eaee3142a1225c4
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://leonvi.ru/123?utm_term=festivals+of+pakistan+ppt PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4472206/normal_60236453eb82b.pdfIn PDF document text
    • http://ens-pictures.ru/nakinirisebizibx4s01.pdfIn PDF document text
    • http://successinyourlif.website/486981658669fitz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374710/normal_5fe3aa42b5098.pdfIn PDF document text
    • http://brandframeb.com/nonejiwexidoragosubipekec4ioz.pdfIn PDF document text
    • http://psylath.com/55971933583ql33u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379970/normal_5fdf3b68abc3b.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/xufujofaleki/50345385367.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/genogofaz.pdfIn PDF document text
    • http://dinixebun.epizy.com/adobe_premiere_slideshow_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/fedajibozixukirab.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/westlife_songs_nonstop_audio.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_off0000d07f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD07F 4876 bytes
SHA-256: d7a1b7d54603914faa9cc801455ce7404adb6cd23f779e51cbdce5e708e43d5f
font_01_sfnt_off0000e13a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13A 10960 bytes
SHA-256: 114d8fa94171ae96dd3e4b79820cd2570a92c342ca5747c2a7da5aa82a3acec4

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