Malicious PDF — malware analysis report

Static analysis result for SHA-256 f24a22f60ffa9d82…

MALICIOUS

PDF

78.7 KB Created: 2021-03-13 23:23:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bc988c5b6b96894daab5116ed5f0b8e SHA-1: e6c06b739625bf3e160771c9ba0365afd65a2fa5 SHA-256: f24a22f60ffa9d828b9754b0d8c1dbebe51191c5cbe866c6e7be2666fbcb3c6a
136 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam. The document body, though heavily obfuscated, contains keywords related to legal documents and awards, aligning with the lure. The presence of numerous external URLs suggests an attempt to redirect the user to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://nipisod.ru/award?keyword=articles+of+association+and+memorandum+of+association+pdf
    • https://cdn-cms.f-static.net/uploads/4457582/normal_60491de0d400b.pdf
    • https://static.s123-cdn-static.com/uploads/4415327/normal_5fca43dcb4a40.pdf
    • https://cdn.sqhk.co/tifobebe/iaidjd1/60966782817.pdf
    • https://cdn.sqhk.co/karopepagu/dgeibjf/xemarujowef.pdf
    • https://cdn-cms.f-static.net/uploads/4416923/normal_60215f65a48dc.pdf
    • https://cdn.sqhk.co/masamiwe/idujegd/wordpress_admin_login_page_not_showing.pdf
    • https://static.s123-cdn-static.com/uploads/4376866/normal_5ffb2f25a4bac.pdf
    • https://cdn-cms.f-static.net/uploads/4417315/normal_6027068f0647d.pdf
    • http://tomobufefiz.iblogger.org/winner_ugly_christmas_sweater.pdf
    • https://static.s123-cdn-static.com/uploads/4410416/normal_5fe1fa73ba2e9.pdf
    • http://tigazefu.iblogger.org/fesixilavudunu.pdf
    • https://cdn-cms.f-static.net/uploads/4449781/normal_600ccd42956dd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bededuxotulapil/43903578529.pdf
    • https://s3.amazonaws.com/jewizopukuni/whatsapp_autoresponder_pro_apk.pdf
    • http://mutidulofof.epizy.com/onde_ler_livros_online_gratis.pdf
    • https://s3.amazonaws.com/zusevamasor/psychological_empowerment_theory.pdf
    • https://s3.amazonaws.com/xipavir/brche_klasse_6_bungen.pdf
    • https://s3.amazonaws.com/wazotojemov/72989425955.pdf
    • http://nevuwomekemetil.rf.gd/environment_agency_pension_fund_annual_report.pdf
    • https://s3.amazonaws.com/gonafoziguwewe/befaxozumona.pdf
    • https://s3.amazonaws.com/moduluzuxikari/how_to_use_a_digital_tire_pressure_gauge.pdf
    • https://s3.amazonaws.com/mixanaz/how_loud_is_amazon_echo_2nd_generation.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_off0000f2a4.bin
a5a789e20c4e42969751408e23a81c90877c07183d004417d169db90319dc3e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A4 5288 bytes
font_01_sfnt_off0001048d.bin
513112754a8b0293c23b83261b64d3419e6a43a461a35d7e8f448e78943421df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1048D 11776 bytes

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