Malicious PDF — malware analysis report

Static analysis result for SHA-256 99cadce69a4b7d34…

MALICIOUS

PDF

49.9 KB Created: 2021-04-14 15:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1b4491dde4b30cd4e1122e0f49215f89 SHA-1: d96eda9c6b2d5fdc9f4b3cc597dc30602b588552 SHA-256: 99cadce69a4b7d342c0f08cfef1c306c1020ee296abe3bc2972546be9d83c02a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.7360

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/strik?utm_term=antigone+unit+test+study+guide+answers PDF link annotation
    • https://xoxajunun.weebly.com/uploads/1/3/4/3/134351876/pomasa.pdfIn PDF document text
    • https://zamovolipizutuj.weebly.com/uploads/1/3/1/0/131070940/wanekiw.pdfIn PDF document text
    • http://xulazawelinuze.scienceontheweb.net/57869265406.pdfIn PDF document text
    • https://subafeso.weebly.com/uploads/1/3/3/9/133986831/9255773.pdfIn PDF document text
    • http://vadosixajobirug.mygamesonline.org/binomial_theorem_class_11_notes.pdfIn PDF document text
    • https://zibizunazop.weebly.com/uploads/1/3/2/7/132710786/78f42016a0541b4.pdfIn PDF document text
    • https://rigopijifotifat.weebly.com/uploads/1/3/2/6/132695828/8013eaef987d621.pdfIn PDF document text
    • https://pivazadigemeza.weebly.com/uploads/1/3/4/6/134642233/xotowelamusowojafapo.pdfIn PDF document text
    • https://valabonef.weebly.com/uploads/1/3/1/3/131379230/8916326.pdfIn PDF document text
    • https://fegafedanopi.weebly.com/uploads/1/3/4/3/134311678/renitov_fovekili_vatamefadit.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/logistics_and_supply_chain_management_ppt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f2c6938-602f-4be2-80e7-33b7bc3ec35c/79134866917.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/jakudugevi.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/bot_auto_liker_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/skyrim_special_edition_mod_load_order_xbox_one.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/9734305060.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cec97f44-6eb3-420d-9727-66baf9bd97c5/gaggia_classic_coffee_machine_instructions.pdfIn PDF document text

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