Malicious PDF — malware analysis report

Static analysis result for SHA-256 45e07ebb5c42f152…

MALICIOUS

PDF

68.0 KB Created: 2021-02-16 09:58:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 4dc2a8566110826dd2faf7aa2138251f SHA-1: 18d9f4a85e23900a008c5e45e3283c6e7a8bc646 SHA-256: 45e07ebb5c42f1529623178fadb469a2889ae58ff4f273f4bf096a2e3e8f8a20
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'https://bologen.ru/strik?utm_term=how+to+find+the+area+of+compound+shapes+ks2', suggesting a phishing or credential harvesting attempt disguised as educational material. The document body, though heavily obfuscated, appears to contain metadata related to its creation, further supporting its role as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/strik?utm_term=how+to+find+the+area+of+compound+shapes+ks2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4462678/normal_5fc94d6194b00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494877/normal_5ff08250b1aca.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/VTjgidE/28227998120.pdfIn PDF document text
    • http://jabodaligononu.iblogger.org/second_conditional_speaking_activity.pdfIn PDF document text
    • https://cdn.sqhk.co/xenojepezere/rifzOgg/ultraman_anime_2019_wiki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449618/normal_5fcb298425fe4.pdfIn PDF document text
    • https://cdn.sqhk.co/sifalavuxozo/ahe5jgO/kodiak_cakes_ingredients.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xugonowelimije.epizy.com/peugeot_android_auto_compatible_phones.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/scrivener_android_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/peloton_android_app_release_date.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/72659598150.pdfIn PDF document text
    • http://tivapatovike.epizy.com/17521608261.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/8th_grade_minute_math_worksheets_answers.pdfIn PDF document text
    • http://pewavifasovifuz.epizy.com/boroline_antiseptic_ayurvedic_cream_information.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/nelson_biophysics.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/85886955393.pdfIn PDF document text
    • http://wewimolu.epizy.com/ppt_cv_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/wepogigezuwobupo.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_off0000cc1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC1B 5612 bytes
SHA-256: 011d07084a2123095c19d9ee960087a42fdcb1ca8b554ee26227ce2d477edc79
font_01_sfnt_off0000df19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF19 10516 bytes
SHA-256: 10dc560d927754e3fe8d0a44f8685f47deac18b177ccfabf42afad758c2b83a3

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