Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb813d2c7d0c06b9…

MALICIOUS

PDF

235.6 KB Created: 2021-02-20 12:10:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 464330a1f146f4d25a3f43451f29f000 SHA-1: de26f678d54f8f7306b7d0cc831ea56c91126c4a SHA-256: eb813d2c7d0c06b95258ca5391d3406f13ada642e8c672f4053b7278b75d49c6
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely used to deliver a secondary payload or conduct phishing activities. The document body, though heavily obfuscated, contains text related to an ebook, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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/aws?utm_term=the+squat+bible+ebook PDF link annotation
    • http://ruwegekugite.22web.org/90899758186.pdfIn PDF document text
    • http://lifizix.22web.org/rarosujejagalanini.pdfIn PDF document text
    • http://turogitirimutax.22web.org/iwsr_organic_wine_report.pdfIn PDF document text
    • http://bururofag.iblogger.org/77834048138.pdfIn PDF document text
    • http://xapepinozex.22web.org/template_letter_for_cancelling_car_insurance.pdfIn PDF document text
    • http://gosofejabe.iblogger.org/printable_party_invitations_templates.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/jhiZKuP/simple_vanilla_ice_cream_recipe_no_machine.pdfIn PDF document text
    • http://xetuwapid.iblogger.org/kuzifiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://magonusu.epizy.com/taboo_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/18478740920.pdfIn PDF document text
    • http://runesufosufej.rf.gd/nanuwokiw.pdfIn PDF document text
    • http://juxudawalugevop.epizy.com/kadikemaxetugugelupoj.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/fractions_worksheets_math_drills.pdfIn PDF document text
    • http://zobotipuzadevi.epizy.com/love_story_movies_2019_full_movies_tagalog.pdfIn PDF document text
    • http://sufapasikan.epizy.com/network__study_guide.pdfIn PDF document text
    • http://meduzifovum.epizy.com/first_italo-_ethiopian_war.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/nipuriniroramagotexemodel.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/zilenuva.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_off00036748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36748 4956 bytes
SHA-256: 92c93e432130b0de70357b337e20e3aa45450d1ea0e388dcbcc1c5fcc4ba7fa8
font_01_sfnt_off00037822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37822 12292 bytes
SHA-256: 762050b8df2ba1ae8819b08d2e89ae8f23077feb34d945cf64efae45d19e282d

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