Malicious PDF — malware analysis report

Static analysis result for SHA-256 50eccfe9e7f61890…

MALICIOUS

PDF

73.1 KB Created: 2021-02-14 01:16:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: c8046ec31f2238e9953c6af0e18ede80 SHA-1: 44f9515e63886790bffe5b81d98cdd3026905d10 SHA-256: 50eccfe9e7f618908ad1166b93c1144c81e57bd875438696fde06bd86adaee42
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'seumenha.ru', which is likely used to deliver a malicious payload or conduct phishing. The document body, though partially corrupted, suggests a lure related to 'Stunt cars 3 smart driving games'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or malware distribution attempt.

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://seumenha.ru/wix?keyword=stunt+cars+3+smart+driving+games PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450864/normal_5fe46fd57c0c0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451229/normal_5fceb79f5f2c0.pdfIn PDF document text
    • http://detonicinitalia.website/introduction_to_acids_and_bases_worksheet_answersrknn8.pdfIn PDF document text
    • http://ayazshabutdinov.club/business_game_mod_apk09hjw.pdfIn PDF document text
    • http://samoe-samaya.ru/pudefipijigdu5ln.pdfIn PDF document text
    • http://avbox.org/pukinefadudasefet2d2m2.pdfIn PDF document text
    • http://digitalmicroteter.xyz/zemobutidixprxhz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407724/normal_5fddb9fbb80d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368242/normal_601709dc5bcc2.pdfIn PDF document text
    • http://zebrait.fun/revistas_online_descargard5s9b.pdfIn PDF document text
    • http://verifiedbadges-form.com/snowball_mountain_gunsf8mns.pdfIn PDF document text
    • http://thepropheticapp.com/jigofubitofiri98vhj.pdfIn PDF document text
    • http://parubexe.iblogger.org/gbrmpa_report_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409393/normal_5fd1c2ab42086.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/jodabiladezot/astroneer_apk_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/27299214751.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/barron_s_ap_biology_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/bunny_the_killer_thing_parents_guide.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_off0000e090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE090 5552 bytes
SHA-256: 9926de0fb5d824457142af207e09a5cd4c501cd2824ed6bd8ef76dbd8b0fa7df
font_01_sfnt_off0000f35f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35F 10428 bytes
SHA-256: 48e0ade32cd53bde055bda72b2e1c8eada442e7b169cfece25284cd1a7c3662c

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