Malicious PDF — malware analysis report

Static analysis result for SHA-256 d12a2be4cf27f802…

MALICIOUS

PDF

66.8 KB Created: 2021-03-10 06:10:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9dbf3b6c15f95735701b3118dcf365b SHA-1: 5dd1e7ea130f3bdb052f6f149c8e8d6130d75520 SHA-256: d12a2be4cf27f8025c64c70807bb876ea483df872a4cceeeaf2e56e4715dd893
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of an external URI and the overall malicious classification suggest the document is designed to redirect users to malicious content.

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://botokaw.ru/123?utm_term=geometric+sequence+kuta+software+answer+key
    • https://cdn.sqhk.co/nagebagem/5hirCUy/94105597311.pdf
    • https://cdn.sqhk.co/mezutorixo/VRudaeD/42275842049.pdf
    • https://cdn.sqhk.co/suxupijisajo/qgcbmFk/warrior_cats_game_online_untold_tales.pdf
    • http://gayerkan.com/gamofiworawogzz.pdf
    • http://odebayitrafikhizmeti.com/green_day_holiday_drum_sheet_music76uv5.pdf
    • http://garanibukumom.scienceontheweb.net/lebubeberejujivadunuwab.pdf
    • http://theharaka.online/46612980271qdah4.pdf
    • http://nubolats.xyz/fovasajepizasegixef9lkss.pdf
    • http://avtoshtorki.shop/ziwulafupafidwwdl.pdf
    • https://cdn.sqhk.co/xubipoxeguza/fMidggv/xadufofesag.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jewizopukuni/cqc_report_maples_care_home_bexleyheath.pdf
    • https://ed36ca5d-e6e9-4caf-8bbb-3a8af5cfee16.filesusr.com/ugd/971556_fb656f2ebaf64191bb1170f89daae553.pdf?index=true
    • https://f8b57e9d-e272-4783-b6f5-6420e6b93425.filesusr.com/ugd/886b73_34dc5b7cadf84ce39bde6e3ca696fcd5.pdf?index=true
    • http://xusapibu.onlinewebshop.net/interlinear_hebrew_greek_english_bible_download.pdf
    • https://b5c4f4dd-ae1f-4f6a-908c-f463551224e4.filesusr.com/ugd/dafd60_52d47345ad77490e871a9feff5c5126d.pdf?index=true
    • https://s3.amazonaws.com/najubu/69191791264.pdf
    • https://5b2b9875-3923-4577-9ef6-0527498c95e7.filesusr.com/ugd/4e6dd5_7b99edc4e12e47bf8864d0159b135df2.pdf?index=true
    • http://xumuritikoxuk.myartsonline.com/70498152380.pdf
    • https://c1d61d78-9bae-425c-b347-ee91470fe4f1.filesusr.com/ugd/60933b_ef546ca9666049bd9b4e2b14639277b4.pdf?index=true
    • 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_off0000c9d1.bin
6e42b81680350a9f05e7644d83ba3bd823a02537edc3afd0f9ee94f958a091b1
pdf-font-stream PDF embedded font (sfnt) at offset 0xC9D1 5412 bytes
font_01_sfnt_off0000dc46.bin
3b70b000d7975dc426bbb363bd36be93324fc25ad8084ac4537c34112e6f9058
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC46 9940 bytes