Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5ca32feef55b19d…

MALICIOUS

PDF

49.6 KB Created: 2021-03-25 05:39:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a69838c3dc43dcf284a917d0698a98ac SHA-1: 3e1d01d3690f4330dba05c1cd3af66772291c061 SHA-256: a5ca32feef55b19dbf56d527559c34f42a5ab6cb48f7d8d169b1e4e090d5e2fb
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an image-based lure, a common tactic for phishing or malware distribution. It embeds multiple external links, including one to 'leonvi.ru', suggesting an attempt to redirect the user to a malicious site. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7228

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 49 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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/aws?utm_term=the+chronicles+of+narnia+prince+caspian+book+report
    • https://static.s123-cdn-static.com/uploads/4372074/normal_5fde82ec0fe1d.pdf
    • http://lagejarejitog.mypressonline.com/writing_sheets_for_ielts.pdf
    • http://galosidijixiwu.mypressonline.com/abstract_noun_worksheets_for_class_4_with_answers.pdf
    • http://dikegebe.mygamesonline.org/87156110663.pdf
    • http://birapemotafew.mygamesonline.org/chagas_enfermedad.pdf
    • https://static.s123-cdn-static.com/uploads/4458856/normal_5ffa77b065ea5.pdf
    • http://relibafogat.sportsontheweb.net/how_many_horsepower_is_a_208cc_snowblower.pdf
    • http://kosamaritaj.getenjoyment.net/2020_nascar_truck_schedule.pdf
    • https://static.s123-cdn-static.com/uploads/4409992/normal_5fded75d27eff.pdf
    • https://static.s123-cdn-static.com/uploads/4417315/normal_5ff943f020418.pdf
    • https://fc06435f-e709-4c80-b59d-96fa470c1a13.filesusr.com/ugd/bdc04d_73ca510899524f8b8a5e1e2fec1c3c1c.pdf?index=true
    • http://gozuketitara.onlinewebshop.net/8755657292.pdf
    • https://s3.amazonaws.com/salosibejodod/android_app_to_add_text_to.pdf
    • https://s3.amazonaws.com/vapelurowar/avg_antivirus_crack_for_pc.pdf
    • https://s3.amazonaws.com/furunumaroxun/86302115339.pdf
    • https://s3.amazonaws.com/sinamozagemoger/28386543113.pdf
    • https://s3.amazonaws.com/rogugagatuf/bhakti_geet_gana_video.pdf
    • https://dd54f144-242a-4a88-9385-6c39f9996aab.filesusr.com/ugd/9f32c1_f7f0fc88a43743f2b3d85791efa1bad6.pdf?index=true

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