Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdad1cc3b4138d37…

MALICIOUS

PDF

90.3 KB Created: 2021-04-02 19:25:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6e2fc041323d147527d834717a15c78a SHA-1: 8267b919847cd0327461e4990ac190568a9a1e40 SHA-256: cdad1cc3b4138d373c36a59f3e7bd6159e382e7364dfd13738b6727a0488ac13
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 0.9998

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://nipisod.ru/wix?keyword=tombs+of+terror+guide+reno PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4474449/normal_6032472a09b44.pdfIn PDF document text
    • https://juzumefewuw.weebly.com/uploads/1/3/4/7/134766708/petokuwidaxuw.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/91942459017.pdfIn PDF document text
    • https://cdn.sqhk.co/xetokive/iehiTif/minecraft_mods_mutant_creatures_1._7_10_download.pdfIn PDF document text
    • https://cdn.sqhk.co/lonuxonemor/giu6zwJ/jko_antiterrorism_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/lidumezuvir/jnkmLCa/lusaxepon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474191/normal_5fd046022d767.pdfIn PDF document text
    • https://wevubajapema.weebly.com/uploads/1/3/5/9/135958203/juvodunedu.pdfIn PDF document text
    • https://lakiromepokina.weebly.com/uploads/1/3/4/5/134589127/sabobavurakirofexa.pdfIn PDF document text
    • https://xoxebugifujame.weebly.com/uploads/1/3/4/4/134478015/vabari.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370785/normal_601f7ff34aa3f.pdfIn PDF document text
    • https://mubikobilowopo.weebly.com/uploads/1/3/0/9/130969089/e4b78ff2.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/zosevid/professional_business_letter_format_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/history_of_western_philosophy_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/puxefowak.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/what_is_a_masters_in_organizational_management.pdfIn PDF document text
    • http://wumugajus.onlinewebshop.net/cellular_physiology_and_neurophysiology_2nd_edition.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_off00012504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12504 5072 bytes
SHA-256: a5110716c4d27f7d673be007ada9e97e77cbe3e25db2959e0bb18758b62e4db6
font_01_sfnt_off0001362c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1362C 10720 bytes
SHA-256: b0ccff432ccac541c296407a150b34bd2886052869c420f4cf865c7ceca705f9

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