Malicious PDF — malware analysis report

Static analysis result for SHA-256 946742689059e152…

MALICIOUS

PDF

47.0 KB Created: 2021-02-25 06:03:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: fad0b7382d8213dd36bc77df0b988f94 SHA-1: a64666c75d4e3df2de4aed99aa4df6c8571ce11c SHA-256: 946742689059e15218898c23eb685de5a4900f6cb42507d4bab3fd4a2050f048
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to PDF files hosted on S3 buckets and Weebly domains, suggesting a link farm or SEO spamming operation. The ClamAV detection and ML classifier also indicate malicious intent. The embedded URLs are likely used to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7304

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/award?keyword=collagen+improve+skin+tone PDF link annotation
    • https://pilawero.weebly.com/uploads/1/3/4/0/134095891/gojimovepimomun.pdfIn PDF document text
    • https://kajuzenutojaso.weebly.com/uploads/1/3/4/6/134631714/6253171.pdfIn PDF document text
    • https://zefemebok.weebly.com/uploads/1/3/0/7/130775969/4152548124.pdfIn PDF document text
    • https://dojosijodutater.weebly.com/uploads/1/3/6/0/136050104/jiwixere-zuzikalop-geninubona-jozenig.pdfIn PDF document text
    • https://cdn.sqhk.co/ropobemuma/aTT4fm2/train_time_sydney_to_newcastle.pdfIn PDF document text
    • https://vibofigejud.weebly.com/uploads/1/3/0/7/130740502/kadipegabunefaf.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/jepivobezonefol.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/chilam_tere_lakho_ilam_song.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/sad_boy_cartoon_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/blank_sheet_music_word_document.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/vetanemikereganijiku.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/chaplin_smile_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/web_browser_with_manager_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/64709289736.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/android_studio_assets_folder_not_found.pdfIn PDF document text

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