Malicious PDF — malware analysis report

Static analysis result for SHA-256 264322e476be7ecf…

MALICIOUS

PDF

80.1 KB Created: 2021-03-31 05:52:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a427d4efa1f8cac230fbef96fecb62c1 SHA-1: 59f78ac8b9bd661649d2e58e6f2b0c6428b1e8f9 SHA-256: 264322e476be7ecfddbf66fa4534e610dcab4c4098453f2d0114c02ca8ca4211
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crophysi.ru/award?keyword=pdf+to+editable+word+converter PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417046/normal_605f70a5c0b68.pdfIn PDF document text
    • http://difavusimope.iblogger.org/pelixufozuratig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445106/normal_6020cd279294d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464710/normal_5fdaef5bd0213.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366346/normal_600fdac963b03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_605f9f151674f.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/wunupalezozerud/psychology_practice_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e60dad68-eb4f-4a7d-8f98-0ebc37de04c1/994989082.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/cnc_bending_machine_programming.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14247569-56a4-4dcc-bb86-038c82834801/17364030195.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/pagedesas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d1dd179-7489-4cb8-8d2f-cff9f69da94c/la_plaa_del_diamant_merc_rodoreda.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/how_to_connect_hose_to_troy_bilt_pressure_washer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38d1cc5b-d7a8-4112-91fa-9cc67c293e8d/toto_washlet_c100_review.pdfIn PDF document text
    • http://juwebud.epizy.com/78409163917.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/english_writing_course_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/how_to_factory_reset_samsung_blu_ray_player.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/71920166513.pdfIn PDF document text
    • http://lamupilabixekuw.epizy.com/budget_proposal_template_microsoft_word.pdfIn PDF document text
    • http://kevisokifo.rf.gd/48510155039.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48148ea2-c9c0-42a8-a7fa-24f9b8b31a39/jaxomolinepa.pdfIn PDF document text
    • http://larisakexifa.epizy.com/parallel_lines_algebra_worksheet.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_off0000faea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEA 5128 bytes
SHA-256: 4340fa841d37484d33e015d9e431fc662d46d46881f6b637c3ee164db14efb64
font_01_sfnt_off00010c88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C88 11392 bytes
SHA-256: 186dbe7605107045d7bfb87c40893c45fdde62f1007b1033db675947af3717c2

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