Malicious PDF — malware analysis report

Static analysis result for SHA-256 955b730f43f956e8…

MALICIOUS

PDF

73.9 KB Created: 2021-03-10 19:29:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f8f6d0c7f67bfeb31997d83d2c607daf SHA-1: e481bd19ba4f2cbb7e90b5657de27044e0c1d63a SHA-256: 955b730f43f956e89eb95f14fd15b8f322894a8f423fd3d186150512bf2004cb
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 0.9998

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://bologen.ru/strik?utm_term=line+of+succession+history+definition PDF link annotation
    • http://rerubin.space/father_and_son_quotes_in_night57kxm.pdfIn PDF document text
    • http://mrt36.ru/818456051490pcnv.pdfIn PDF document text
    • http://goodik.fun/kixobuxx4fj.pdfIn PDF document text
    • http://mmmuuuue.space/una_mattina_pianor2jm0.pdfIn PDF document text
    • http://storezone.info/nikon_nikkor_50mm_f_1.4_non_ai_manual_focus_lenslzpgu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455403/normal_603604b2a7ecc.pdfIn PDF document text
    • http://vash-komfort5.ru/qumica_orgnica_vol_2_wade_7maj4ta8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384650/normal_5fe60e34c2c55.pdfIn PDF document text
    • http://onlinekartiadesi.com/tewebusinasujezapuvidcq4mc.pdfIn PDF document text
    • http://detonicufficiale.website/4153707681560d7v.pdfIn PDF document text
    • http://mrt36.ru/administracion_de_recursos_humanos_libro4f52s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380691/normal_5fdb99348e559.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/datarofapakil/14736020084.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/xizikuweboparuzodonunede.pdfIn PDF document text
    • https://s3.amazonaws.com/farokof/biblical_fasting.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/death_note_movie_l_actor.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_off0000e3bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3BF 4908 bytes
SHA-256: 1858f509c5aa6678c6358318f9cf4c5cb9987624ed02cabe99cd807313a1b1ea
font_01_sfnt_off0000f47f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF47F 10724 bytes
SHA-256: e208b9680ccb97f6bbb9300b9814e2d31e21e60cc5623bf7cf1d67d844a953fb