Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6ec11e6ee0a7753…

MALICIOUS

PDF

78.6 KB Created: 2021-03-14 22:53:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64220d4e28bcc2997dd2f99ad1d08495 SHA-1: 7b7607a980b263c8416ada438d00a79dc06df5e0 SHA-256: a6ec11e6ee0a775309651412bc17a63be7b7da884cb114cbbb80832bad5c30db
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely intended to deliver a malicious payload. ClamAV and ML classifiers strongly indicate malicious content, and the PDF structure suggests it's designed to exploit vulnerabilities or trick users into visiting harmful sites. No scripts were extracted, but the presence of external URLs and high detection scores point to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/award?keyword=dulce+et+decorum+est+notes+pdf
    • http://pofaduxiruk.getenjoyment.net/78332582251.pdf
    • http://xalenupom.getenjoyment.net/central_vs_peripheral_vertigo.pdf
    • http://xuxetosufuzo.getenjoyment.net/jenusis.pdf
    • https://cdn-cms.f-static.net/uploads/4380528/normal_6047021c4bfc0.pdf
    • https://static.s123-cdn-static.com/uploads/4412394/normal_5fed507dc6fb2.pdf
    • http://kuzamejeluwezik.22web.org/xewozaka.pdf
    • http://gekifek.scienceontheweb.net/54089127413.pdf
    • http://kinemulawaw.sportsontheweb.net/zozopeputuxu.pdf
    • http://bafedudovodamo.medianewsonline.com/peledubisesisemeba.pdf
    • https://cdn-cms.f-static.net/uploads/4426677/normal_603e5fdbc76b8.pdf
    • https://cdn-cms.f-static.net/uploads/4390371/normal_6031525706344.pdf
    • https://cdn-cms.f-static.net/uploads/4424026/normal_60375b1979afe.pdf
    • http://winoxolupuvil.getenjoyment.net/zadularesitefojejepok.pdf
    • http://kejubeluvobule.iblogger.org/torufedunuwojuvakidaxo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://e85625e8-91d5-48c2-95a4-67b7b95d5b39.filesusr.com/ugd/b97a97_29a09dd7f7d0497aa6c31b8ebbd85813.pdf?index=true
    • http://vawerudarasikow.myartsonline.com/cyberpower_1500_avr_battery_backup.pdf
    • https://a72b158e-cead-41d6-a0b3-8518216316a4.filesusr.com/ugd/35c6e2_dd43412783c048f89c2d1b4611c0027a.pdf?index=true
    • http://vatugiw.epizy.com/what_is_f2_on_sunbeam_electric_blanket.pdf
    • http://pinakebe.rf.gd/singer_sewing_machine_manual_1960.pdf
    • https://e79dab91-b8ca-4f03-a7cf-74564eaa1d8a.filesusr.com/ugd/009cd4_b55d3e15a97f46c889bb12cdb7511aad.pdf?index=true
    • https://dc688580-c0ec-4ade-910b-7abffd870ab4.filesusr.com/ugd/096b61_7692f01cc15c4c38ab7718f497842c1e.pdf?index=true
    • http://wadatenut.rf.gd/49566186532.pdf
    • http://ralenosozizog.epizy.com/branches_of_home_economics.pdf
    • http://vukilef.rf.gd/2540283604.pdf
    • https://dedb376b-efc3-4528-ac10-fc65d12f866c.filesusr.com/ugd/5f6074_2a19c0aa8fd243a7a47a15e8c0e1aa6a.pdf?index=true
    • http://gomaxuxibofetap.epizy.com/35297532824.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_off0000f5e6.bin
c9ba5278132973dee5b016b1db4c1c5c3b42b6228f27a5af731a427a843f2737		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E6 5092 bytes
font_01_sfnt_off0001072b.bin
554c8b5e3dac8ce7fdc65cc5f50e5dce250f2c7121c5ca1a701a6d35cbfd88c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1072B 10960 bytes

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