Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec973517eae879c7…

MALICIOUS

PDF

86.8 KB Created: 2021-04-09 05:44:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 26f8169cbfc2b98709931f602009a587 SHA-1: 5a1202a459956ce3c563ba5116c71314c919a02d SHA-256: ec973517eae879c75db69949daef98b4a9916f261bb62ca232b17cf1c4dcbe51
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/strik?utm_term=cissp+exam+notes+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4492272/normal_5ffdf601f0aaa.pdfIn PDF document text
    • https://cdn.sqhk.co/setinapas/eijhjig/bhojpuri_dj_remix_song_new.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445573/normal_606020e662a09.pdfIn PDF document text
    • http://busijizi.medianewsonline.com/47459701642.pdfIn PDF document text
    • https://cdn.sqhk.co/mobirewin/cjjujhr/43764460434.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369149/normal_6040c11e2ac02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368956/normal_601363ca4eae1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466391/normal_60313492a5bd6.pdfIn PDF document text
    • http://jasazotinalol.mygamesonline.org/gmac_gmat_review_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405946/normal_60345313d7a26.pdfIn PDF document text
    • http://bepifukikuku.mygamesonline.org/fosibewamoxafemexuz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464541/normal_5ffa3ee1655e4.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/jutenojamega/identifying_prisms_and_pyramids_worksheets_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/agarose_gel_electrophoresis_method.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/60650335705.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/purble_place_para_celular_android.pdfIn PDF document text
    • http://wuwedilejom.myartsonline.com/personal_branding.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/gopuwujegamovoweb.pdfIn PDF document text
    • http://wenulusevikofa.myartsonline.com/botaxozijerina.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/vofozobokobuse.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/how_to_win_6_45_lotto.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_off000117f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117F8 5032 bytes
SHA-256: c45f380a1f2f92c9259eb9ad7a03102c562845206ce14b027a006c0a4c30de19
font_01_sfnt_off0001290e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1290E 10868 bytes
SHA-256: da5e281e852f0d9d492b95bbb6507e582da9e81afbcf45e498d1264556b306f0

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