Malicious PDF — malware analysis report

Static analysis result for SHA-256 58da524dc2de1d25…

MALICIOUS

PDF

83.5 KB Created: 2021-05-16 12:03:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 21e29ebfe3da8625d1ee73518d5c3a71 SHA-1: 05d9b5ce6f75b8b5959c4904e65ece8f6f155cd6 SHA-256: 58da524dc2de1d2531c233b02daa485d2e5a1ed97f82c1abd39c8edb58cd35c0
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 by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that mimics a search result, likely intended to trick the user into visiting a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://seumenha.ru/strik?utm_term=what+order+should+i+watch+marvel.movies PDF link annotation
    • http://zitalogeloluwiw.mygamesonline.org/energia_elica_como_funciona.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478387/normal_5fed22df7fc86.pdfIn PDF document text
    • http://vitodibiwanezej.mypressonline.com/1710927832.pdfIn PDF document text
    • https://nerukime.weebly.com/uploads/1/3/1/3/131379394/1598241.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/adwpihZ/fifarozupoloviv.pdfIn PDF document text
    • https://cdn.sqhk.co/deloreba/0jhcmVV/abc_behavior_analysis.pdfIn PDF document text
    • https://gifimaxenewurup.weebly.com/uploads/1/3/4/4/134458705/penenefazibot-rudud-pufababif.pdfIn PDF document text
    • http://pifanaliriwabo.mygamesonline.org/44073648350.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382949/normal_600a93abd5a7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414866/normal_603b861307d29.pdfIn PDF document text
    • http://mizarujil.mypressonline.com/jajasevoze.pdfIn PDF document text
    • http://jomikifu.medianewsonline.com/77574086294.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403674/normal_60396f9500d79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372723/normal_5ff2103201863.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/kubafezin/how_to_reset_mini_wifi_camera.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/about_face_hackworth_free.pdfIn PDF document text
    • http://kakavogulogij.onlinewebshop.net/sopozojudelunozadupora.pdfIn PDF document text
    • http://tofilijewok.atwebpages.com/vewuwanogopenebarino.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/xukemurusixamisemuguv.pdfIn PDF document text
    • http://mifojizu.myartsonline.com/4985423602.pdfIn PDF document text
    • http://gajutar.onlinewebshop.net/core_java_coding_interview_questions_and_answers_for_freshers.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/1307217457.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/dickies_women_s_pants_size_guide.pdfIn PDF document text
    • http://jifimurosesapu.atwebpages.com/bixunidazeza.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_off00010924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10924 5376 bytes
SHA-256: 8c516eaa10128acd7083bbf76a43eff50fca4391b319223b05c598a061d72bb8
font_01_sfnt_off00011b60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B60 10864 bytes
SHA-256: e85b76120cb0015b432e963df192e6f82066e1f615813be73a206db2fcc68878

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