Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bccc1abfb24527a…

MALICIOUS

PDF

70.7 KB Created: 2021-04-11 21:41:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: ca44c24b642173f460504db1d3c35baf SHA-1: 77139a485e76134073b6f8ebb3e55333a253fc3e SHA-256: 4bccc1abfb24527a16281de8db16c8651663d14128cff312556502b7fa43d073
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 phishing site, disguised as a chainsaw parts diagram. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to trick users into visiting a malicious site, likely for credential harvesting or malware delivery.

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://botokaw.ru/strik?utm_term=homelite+330+chainsaw+parts+diagram PDF link annotation
    • http://tubudemawaxoki.iblogger.org/anbe_per_anbe_song_masstamilan.pdfIn PDF document text
    • http://poxinezov.iblogger.org/abc_kobotata_songs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448718/normal_5fc603a4956d5.pdfIn PDF document text
    • http://fetazobamu.iblogger.org/16372561068.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374533/normal_6027dbe79536f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452835/normal_606d8f3a0685f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369903/normal_603744ab5b48f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378386/normal_5fd2671d0634e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459478/normal_603603cdc72f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422643/normal_6069c093299cb.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/zuguvoxoki/bazaar_for_pc_windows_7_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/53460367000.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/vidmate_for_android_2._3.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/58795783280.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/12504901962.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/descargar_libro_el_poder_de_la_oracion_persistente.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/18007607452.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/3d_boxing_games_free_for_android.pdfIn PDF document text
    • http://kisuvixoj.epizy.com/big_data_analytics_tutorialspoint.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/74382714109.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/what_is_conventional_forms_of_poetry.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_off0000d642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD642 5844 bytes
SHA-256: 4dec2c73a716f5a8407dd1db4d2993a06f4f38901f7ed750da25f9bd6edffad3
font_01_sfnt_off0000ea0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0C 10256 bytes
SHA-256: 2c55aaa4249359f551efc277fcd2ea2aa84cf1685eac97a6c7f5d3fcab6d4a7f

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