Malicious PDF — malware analysis report

Static analysis result for SHA-256 2189c85a64d2ab15…

MALICIOUS

PDF

75.9 KB Created: 2021-03-19 12:21:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 26858000e4f864eae735f2cfcd4071ae SHA-1: f3c429a966f0d8ce250924f089a4fd1bd22680e9 SHA-256: 2189c85a64d2ab1592d87a14f9403b225d290aba3699f98c20450ee15d83d3ae
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 0.9997

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://pelibifir.ru/award?keyword=bidayatul+mujtahid+terjemah+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383160/normal_602d9f4be7768.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447877/normal_60108d00ba7ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403818/normal_6033082cc8418.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447885/normal_60343700bcf7d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vapite/75290816415.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/is_my_drivers_license_suspended_in_michigan.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/baixar_jogos_para_android_via_utorrent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4b266fe-6f07-4715-b73e-7e744bdd595e/zesegelolusupakevidi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c8f8626-cc28-4d42-8604-220ea8478c99/38550268255.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c83a7e58-6146-47ba-bf69-f6ae6529a864/68457606235.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/possessive_noun_worksheet_grade_2.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/antares_autotune_8_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4240ea8e-4686-4fbc-a3e5-0bed6af3522b/xuxigipasizu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a75ff38b-38f3-46c2-ab4d-d21913e0c92e/96234653602.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87bec99b-0c65-426b-9e45-f3a4db2a2764/jawamaniwizepewow.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/math_halloween_coloring_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/what_are_the_tools_of_summative_assessment.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/dragon_ball_z_android_17_returns.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e56b3d1c-41c3-4214-a36d-8f1ad1a2fc44/navy_seal_training.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab47e284-2619-46b1-9472-d50d338935f1/john_grisham_novels_best_to_worst.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF77 4996 bytes
SHA-256: 54b0669b89c6f57a9f2269922b2284551e8fd7802992e183f4f7951b6b17ccf1
font_01_sfnt_off0000f076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF076 10484 bytes
SHA-256: 7a5046fd8b968a86e9bed57a2cb92d8cc131dbda11e4c4559348d77d436b41f8
font_02_sfnt_off00011429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11429 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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