Malicious PDF — malware analysis report

Static analysis result for SHA-256 a02cfab9f549aeea…

MALICIOUS

PDF

58.6 KB Created: 2021-03-03 23:57:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e55bd52b2f78442eb9f0504e28488078 SHA-1: cdad2deddfbf1d0f8d47abc6711bff7821dec5a0 SHA-256: a02cfab9f549aeea603a22b024890c1a4c4aec565aecf23fecb75ce3b47a9e8d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7196

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://jacksth.ru/aws?utm_term=principles+of+microeconomics+mankiw+chapter+6+ppt PDF link annotation
    • https://vexefanakaxaki.weebly.com/uploads/1/3/4/8/134871487/897e9676.pdfIn PDF document text
    • https://nikuwexipamojag.weebly.com/uploads/1/3/0/8/130813731/jeturodamofuxi-fivago-donudaxesefo-jufofed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462036/normal_5ff76a3cde646.pdfIn PDF document text
    • https://belanuxaru.weebly.com/uploads/1/3/4/6/134670531/jawivabogomutadaned.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495860/normal_600edab8b1353.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409107/normal_5fcfa661a3582.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/11982632165.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/destroy_the_opposition_free.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/absage_formulieren_nach_vorstellungsgesprch_arbeitgeber.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/anjathe_movie_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/android_native_ads_in_recyclerview.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/tinewogegugamered.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/23903442827.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/puzzle_master_sbc_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/pozat.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/android_tv_box_apple_airplay.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/church_event_flyer_template_word.pdfIn PDF document text