Malicious PDF — malware analysis report

Static analysis result for SHA-256 b84199d3bb1a1e72…

MALICIOUS

PDF

83.5 KB Created: 2021-02-18 21:35:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f9b79612cd06bbf2b2a68e341fb43a3e SHA-1: 9d8d6b1f22b5c8b7b86abd1e355b614536043cba SHA-256: b84199d3bb1a1e72dcc5b71f7cbca60b19c81db60f373c9f3ca273d3b2eb15f1
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 0.9996

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/aws?utm_term=events+like+the+great+depression PDF link annotation
    • https://cdn.sqhk.co/letinumi/zifHwia/gokonotaladodowipizanoxeb.pdfIn PDF document text
    • https://cdn.sqhk.co/dekavaka/jdjdrSR/77550617435.pdfIn PDF document text
    • https://cdn.sqhk.co/fekawifen/hhdN2KC/11092752320.pdfIn PDF document text
    • https://cdn.sqhk.co/volinafi/XIjePjc/arkadelphia_high_school.pdfIn PDF document text
    • http://netarowivon.iblogger.org/11720798457.pdfIn PDF document text
    • https://cdn.sqhk.co/vigeroti/idUFs6S/grow_empire_rome_hack_mod_apk_unlimited_gems.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/hfBgBxY/zijovofipidonok.pdfIn PDF document text
    • https://cdn.sqhk.co/mewivupa/T7eS7gf/crossfire_xt3_15.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gavojomizam.epizy.com/numolomitirudelewiduja.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/kawaii_home_decor_mod_apk.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_off00010ab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB2 5304 bytes
SHA-256: b75ca368637f29d47732420911592e9aae90c31d01263655ee247aa45e85c2c8
font_01_sfnt_off00011cbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CBD 10652 bytes
SHA-256: ce3e4d9cf4d992838bf87251ba75c92e7f9f6cbdf387ae2285cc72d26ce04745

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