Malicious PDF — malware analysis report

Static analysis result for SHA-256 b590bc45ba77bd79…

MALICIOUS

PDF

80.7 KB Created: 2021-04-02 04:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 53794de7dd3fc4b78e86e281995730a1 SHA-1: b98976b403d3b68bad4b88af048448845118cd83 SHA-256: b590bc45ba77bd796959f3b85912bb1fa5b060dedab47b5c45f9a0b5163f934f
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://jottigo.ru/wix?keyword=bozeman+directv+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421478/normal_6059c410f04bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447912/normal_5fd713bba0781.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418567/normal_5fef89448e8cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450043/normal_606611abcfe6e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488141/normal_600642d8e9011.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403119/normal_6023f01207e10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413017/normal_5ff1ef6e6253e.pdfIn PDF document text
    • http://confirmationhelpcenter.com/what_is_the_purpose_of_e_m_codes_2021yns3k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450419/normal_6057dc7cc920a.pdfIn PDF document text
    • http://classkaod.ru/nivovevezaxokamukenedojo57s92.pdfIn PDF document text
    • http://003-center.ru/bijovirupizifyweeh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375075/normal_603d0590a03f5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdafb5b8-2882-4bbc-a01c-63d31b1f6b6f/best_sodastream_uk_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/love_is_gone_song.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/which_is_the_best_catholic_bible_version.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/chancroid_journal.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/echo_attendance_app.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/java_eclipse_tutorial_deutsch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bb409ab-a42b-4e4b-a858-a5ce743a4998/rofapole.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/arabic_mix_music_free.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9C 5208 bytes
SHA-256: 8b41ebc4fcd23809b3ccd96124b786af9d415e27e82e837d7d87467aa6ac666e
font_01_sfnt_off00010d4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D4B 11532 bytes
SHA-256: 1e54177609ee2688330f345af26ad1fb321aff9b7ddf29f4641ca3c5742de971

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