Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e21e03dcb20482f…

MALICIOUS

PDF

73.4 KB Created: 2021-02-28 19:46:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f2386552e760e99df9cf01fc1371a61 SHA-1: f1f71ef513395224965cd2490757e753394bb583 SHA-256: 4e21e03dcb20482fae0ea9579171817a1e42a82cefb0c96c37c4ca8085c01a6a
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that, when clicked, leads to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into navigating to a harmful site, potentially for credential harvesting or further payload delivery.

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/123?utm_term=how+to+put+pdf+into+kindle+app
    • http://argo-tourism.com/74109993363piu48.pdf
    • http://eushopvmn.site/44505360160poblv.pdf
    • http://prostochillforum.fun/lulurubaouu0c.pdf
    • http://ujjjrrrrr.space/89822782185ongki.pdf
    • https://likufuzojelawaf.weebly.com/uploads/1/3/5/2/135298946/56ff265.pdf
    • http://arthromedro.xyz/pegirigoxubujaruzemokabo5psaf.pdf
    • http://naturalik.fun/amityville_horror_movie_free_hd7vylu.pdf
    • http://1pokypki.website/caster_sur_freebox_revolutionalqr3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/betefowubevat/uc_browser_setup_for_pc_free.pdf
    • https://s3.amazonaws.com/nitidadufetenu/bollywood_movies_sites.pdf
    • http://nabenejajoko.myartsonline.com/rodaripuxujezaxasorop.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3a8.bin
9c4ed4d0df8964d282e649d423a9d70c706bdf668a10caa24f012453e8605250		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A8 4876 bytes
font_01_sfnt_off0000f46b.bin
006ade1b7121361decdf27d4b073e8c2f1e6507f04f86d2fa718b96ee8901cb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF46B 10640 bytes

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