Malicious PDF — malware analysis report

Static analysis result for SHA-256 a467aba866f96e0a…

MALICIOUS

PDF

74.0 KB Created: 2021-02-21 17:57:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b877cdb70a74504e44a089c966226f8c SHA-1: 92ab5fc529671691a584a9dd6bab8eb26cf33596 SHA-256: a467aba866f96e0a86939c7331eaaaed38a7575330892f7be0a1f8fbf3ba4b6f
96 Risk Score

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 0.9999

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://maypoin.ru/strik?utm_term=meaning+of+number+802 PDF link annotation
    • http://talakam.space/17784966398wsl4g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372967/normal_602a18d19f0e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421478/normal_5fe930ec4f91f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380530/normal_600143358042a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446500/normal_60215ce176d5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374521/normal_601bfaa1cc3a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407994/normal_5fe94297a7e9d.pdfIn PDF document text
    • http://lnstagramsecurity.net/bassinet_fitted_sheet_patternntuyz.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/xulepiwa/casio_big_12_digit_calculator_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/fadebopesore.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/nifezuvofivuserujuvewugid.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/cribriform_plate_of_ethmoid_bone_purpose.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/jmt_auto_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/infographic_template_free_online.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/vukolexifize.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/91612526480.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/girl_on_fire_piano_sheet_music_free.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_off0000e499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE499 5488 bytes
SHA-256: 329749b7c4820ddbc4ce9149fbbd82accf461273ee23ca473f1d895fb6d247de
font_01_sfnt_off0000f73f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF73F 10712 bytes
SHA-256: abbd68221cab85e4841e7b0e9bcb4e7d0eb8e03e023fc3e4a73849bce32485ca