Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab51c1fac7567598…

MALICIOUS

PDF

80.9 KB Created: 2021-03-18 09:17:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c3c85e1c5b3e7e8434521433b9cef7b SHA-1: d2b25ecad486e7625d988472c5305a3a4abd20bc SHA-256: ab51c1fac7567598ab97f9a8a64e523b83ed6cd5c8d0e5c3ae86fd7101a59315
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result for a technical query, likely to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://botokaw.ru/aws?utm_term=how+do+i+control+my+vizio+soundbar+with+my+samsung+tv+remote
    • http://canonsburglake.com/mcafee_siem_interview_questions_and_answersha7au.pdf
    • https://supavutoni.weebly.com/uploads/1/3/4/7/134713891/jebit.pdf
    • http://gonzo-3d.com/bridgewater_associates_economic_principless8low.pdf
    • http://fruitslope.online/84497680131t2b78.pdf
    • https://dubibezu.weebly.com/uploads/1/3/1/4/131453247/827698.pdf
    • http://dotenipago.medianewsonline.com/mupinimijopirakarixepi.pdf
    • http://hydrofthol.space/244086391761p1lw.pdf
    • http://memisada.mygamesonline.org/wujugaguxinipiti.pdf
    • http://everydays.space/pevatokawizfvom.pdf
    • http://hotsales-com.xyz/94007341771xl83u.pdf
    • http://lelekelosutov.getenjoyment.net/14255308906.pdf
    • http://bit7.top/98338096898hqztv.pdf
    • http://submonster.xyz/wulupojikonogutipit17sh.pdf
    • http://arfesopt.com/ragerigexumaturisune4up5.pdf
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/godaro_xinot_xumanowani_zepijo.pdf
    • https://zizusufake.weebly.com/uploads/1/3/4/6/134646877/xafasebixi-wunuwojedag-wurudo-mefamijibiv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://verirajoxa.epizy.com/character_sheet_app_review.pdf
    • http://sawesupunozigiv.atwebpages.com/sinupup.pdf
    • http://rixuroruwe.myartsonline.com/bucket_list._1000_pomysw_na_przygody_ycia.pdf
    • http://sipitifijuju.epizy.com/software_libre_monitoreo_de_red.pdf
    • http://zilisidojaze.myartsonline.com/debatumimebadugamijonezas.pdf
    • http://rurebafib.onlinewebshop.net/pinoredikufuwariberug.pdf
    • http://muvusibose.rf.gd/glencoe_health_chapter_21_alcohol_assessment_answers.pdf
    • http://dexedigobejo.rf.gd/boboxasadup.pdf
    • http://rigirulame.epizy.com/sentences_and_fragments_worksheets_grade_4.pdf
    • http://tobidogajetu.onlinewebshop.net/73rd_amendment.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_off0000fa9a.bin
7bed675af2a4c08d91a2bad35bddc6d7bdab00d015736ad121648b22c236c940		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA9A 5760 bytes
font_01_sfnt_off00010e2e.bin
e1d7d58e4e7784dfe1df6ddbe409fb99924653d3246b75ac283e7ef93f4f041d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E2E 11424 bytes

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