Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4fce9e1bf2386d5…

MALICIOUS

PDF

485.3 KB Created: 2021-04-18 04:22:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0df94865025b65f6296deb4a279a33df SHA-1: 5c1bcbef850e987ac3fdf5c7bd39ad4564eaaf99 SHA-256: d4fce9e1bf2386d5079d680c09aa3b972d6bbd006fbe0f5ec2c894fa72567992
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9133

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://jottigo.ru/strik?utm_term=vishnu+sahasranamam+lyrics+in+hindi+for+beginners PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379474/normal_5fd2c08d58384.pdfIn PDF document text
    • http://mscredit.info/25701373256t7c5t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489717/normal_602c41a7d525e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455669/normal_5fc5849aea30c.pdfIn PDF document text
    • http://oficialshoes.site/63021387483j6qk4.pdfIn PDF document text
    • http://mugurapit.sportsontheweb.net/aeneid_book_8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367640/normal_605f7b11622ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424010/normal_5fc86e6a74d49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378167/normal_6033d6f9bbf37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416322/normal_605c4372b0f84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413583/normal_60317109beee6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448718/normal_5fec3fc5c4ddf.pdfIn PDF document text
    • http://lipuwisapi.mywebcommunity.org/71710523083.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386836/normal_5fc7e15ee4989.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368975/normal_5ff40148be4f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377924/normal_6039fde7aa634.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/belapawerezuju/airplay_ipad_2.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/79022497551.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/what_does_a_verizon_ont_look_like.pdfIn PDF document text
    • http://gavawekib.myartsonline.com/asciidoctor_docker_image.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_off000748ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x748EC 5644 bytes
SHA-256: 663fca976f75f76b382f4cfca2883511a2f61eb59a91d0587e2d50a754519b55
font_01_sfnt_off00075bfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75BFB 12376 bytes
SHA-256: a2d93fb224623907b6b3a6e611ae715a69d8d2906679a874e59c5895dfdf9c69

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