Malicious PDF — malware analysis report

Static analysis result for SHA-256 46f88e777c9199fc…

MALICIOUS

PDF

72.6 KB Created: 2021-02-22 22:10:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a6cf498140a39f518f0885a5f239f118 SHA-1: a6441619c487221cfe8a0fac4551b4188f8e5c68 SHA-256: 46f88e777c9199fc5f16d0fc6712e29e3c9d04e811ffaf39ba77d3c14a8dc998
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, appears to be a lure related to stock trading hours, suggesting a phishing attempt.

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://bologen.ru/strik?utm_term=philippine+stock+exchange+trading+hours+today PDF link annotation
    • http://sojuvofud.22web.org/nanuwekowu.pdfIn PDF document text
    • http://vuwazakuzasoz.iblogger.org/all_around_the_world_atc.pdfIn PDF document text
    • http://wofijolusiga.iblogger.org/35814018254.pdfIn PDF document text
    • http://rarurude.22web.org/80550503676.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xoxigibutu.epizy.com/67686616679.pdfIn PDF document text
    • http://fuvogixus.epizy.com/athlinks_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/seiko_solar_chronograph_diver_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/automotive_imports_facts_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/rawlings_baseball_uniform_creator.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/adobe_character_animator_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/javascript_string_concatenation_performance.pdfIn PDF document text
    • http://jarifixe.epizy.com/80964666186.pdfIn PDF document text
    • http://rixuzomobe.epizy.com/animation_creator_software_for_pc_free.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/repirinebetodas.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/sevisiforabusefoxumukaj.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_off0000dd4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4A 5572 bytes
SHA-256: 1c1b4b079ba97d991a78410a65aa856210d48fe83efacd210dd142d41710f109
font_01_sfnt_off0000f048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF048 10924 bytes
SHA-256: f92e64d6587ba3f7edf4bdbcaba2044659c51c76eebe4e5b8c487a45d92fb7a0

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