Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e2bc1d716477696…

MALICIOUS

PDF

74.5 KB Created: 2021-02-27 01:33:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3eee206626553bdf3e34fba8f56e5eab SHA-1: d72dc4b213cc0eef112f2ccd5fefcf21fbcff659 SHA-256: 2e2bc1d7164776960a95be5c91a171d21aaf7990c483dafa953d15a2267ad985
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests an attempt to appear as educational content to trick the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/strik?utm_term=nouns+worksheet+for+grade+2+with+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386852/normal_6030a7715f46a.pdfIn PDF document text
    • http://bilet-pdd.site/70949674622hy3x0.pdfIn PDF document text
    • http://robugipunebib.mygamesonline.org/what_comes_on_a_burger_king_crispy_chicken_sandwich.pdfIn PDF document text
    • http://bupetud.xyz/city_of_encinitas_stormwater_bmp_design_manualczgup.pdfIn PDF document text
    • http://khareedforosh.com/xuvizurotivoxegotimiwet6iwkz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475216/normal_5fcbbd4d29cd7.pdfIn PDF document text
    • http://czecheducation.space/suzoxawijuwidedl4kp.pdfIn PDF document text
    • http://aromaita.space/dewugovoxeter8b6u6.pdfIn PDF document text
    • http://dsv-trening.ru/ielts_opinion_essay_structure8vz2z.pdfIn PDF document text
    • http://giocodigital.fun/cronica_de_una_muerte_anunciada_resumen_corto_wikipedia4gwg6.pdfIn PDF document text
    • http://ubzvp.com/letter_format_for_resignation_from_job6tasc.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/farokof/bewufezogolalojiz.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/vepuzaxawagutodefetani.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/writing_algebraic_equations.pdfIn PDF document text
    • https://s3.amazonaws.com/dexodekelaseki/29413069964.pdfIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/friends_sheet_music_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/nomowolagefaxuroz.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/data_mart_report_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/33640394386.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/33627450712.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_off0000e6dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DD 5396 bytes
SHA-256: 816df63c69a80d0bf5923de37fe8102ebcc0bc49855ce2e161a2c5327a0acee6
font_01_sfnt_off0000f94a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94A 10356 bytes
SHA-256: 2774ed60854118cd3daf0d8d5a7179fa1559fe4c41768d326a11504d72d482bd

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