Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba5c895699f3f55f…

MALICIOUS

PDF

72.5 KB Created: 2021-03-01 15:58:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6d8c532a9f5c952fe031ffd868484b6e SHA-1: b0fc1ab1e563de4b52c2e4be269e2bfafdaa2c7f SHA-256: ba5c895699f3f55f83a0ce02f9a6546745afa13276c230db07945a144a051d91
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 0.9997

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://jacksth.ru/123?utm_term=what+does+hyposecretion+of+growth+hormone+cause PDF link annotation
    • http://tur8osale.site/841252647861fxrl.pdfIn PDF document text
    • https://cdn.sqhk.co/kemivabesu/zyejdhb/best_slice_of_life_romance_anime_movies.pdfIn PDF document text
    • http://gallery-shop.site/lecturas_de_reflexion_para_secundariazu8ex.pdfIn PDF document text
    • https://cdn.sqhk.co/xubewarow/bZKRide/nuronejoxanobezeratepu.pdfIn PDF document text
    • http://mkuu.club/8072455339duv0d.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/ihjhcsc/prime_peaks_best_car.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/ihheigd/lebirudon.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/ehehyih/pokemon_guys_x_reader_lemon.pdfIn PDF document text
    • http://manybigs.space/rizupppvqs.pdfIn PDF document text
    • https://cdn.sqhk.co/tesolivu/e4hcMyJ/patiliziwal.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/tawovojo/advanced_engineering_mathematics_kreyszig_wiley_india.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_off0000de7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7B 5744 bytes
SHA-256: 6af8f78f9f93856f1c99f484ca5f8f7c1e0e44ba3179272b3770438d23d82ded
font_01_sfnt_off0000f206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF206 10216 bytes
SHA-256: b4aeb4e6afc22728682fb632d2fb53e94eaf040db861e7638f13dbfcc250266e

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