Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba953bacb84c1c38…

MALICIOUS

PDF

81.9 KB Created: 2021-02-19 17:52:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 88f067a25bc5ad037880cba2867f583c SHA-1: 00aacaa0f34d273868b8016405c3c44f8cf3aa94 SHA-256: ba953bacb84c1c38ff998f9efa4f8142e5a77260d9d9303ba02847043e640ec1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for phishing or further payload delivery. The document body, though heavily obfuscated, suggests a lure related to digital photos.

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/strik?utm_term=que+es+una+foto+digital PDF link annotation
    • https://cdn.sqhk.co/nufopusifa/auhbjbU/41790405436.pdfIn PDF document text
    • https://cdn.sqhk.co/soribivevi/jEJfjek/40078952963.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392668/normal_5fe542d0c6bc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465147/normal_5fd6292231193.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418567/normal_600450641f8f1.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/Ehj9ifB/99128052558.pdfIn PDF document text
    • http://6gusevshop.space/221788537790s0gz.pdfIn PDF document text
    • https://cdn.sqhk.co/kosifodalab/fiahbjf/36884789999.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459027/normal_60000d1f98a74.pdfIn PDF document text
    • https://cdn.sqhk.co/bopelara/gghZjae/83573256579.pdfIn PDF document text
    • https://cdn.sqhk.co/pogezasamu/hhjrDgv/reverse_image_search_on_iphone_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/wapogade/gghjdgi/minecraft_games_for_free_unblocked.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/simujix/molecular_biology_of_the_gene_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/ben_10_psp_games_list.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_off000100ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100AE 5040 bytes
SHA-256: f852f6716e858b932600a8f6ae635d15ee54264d32e7092e1c58c42bb24e1e13
font_01_sfnt_off000111ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111ED 12112 bytes
SHA-256: 84ed33372efad7bcab56ebd07219547059042ccbcc925df15c4722545e4b7662