Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea3bd062f1c9197…

MALICIOUS

PDF

72.9 KB Created: 2021-02-19 22:08:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: c963d655438a55eb40e80bae1e240b19 SHA-1: a9fcbd68824a6ae0bf748af27759a75442290167 SHA-256: fea3bd062f1c9197ab53dbbda8a3811df252113b61d26685870e4e2b36c0bc55
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that redirects to a suspicious domain, masquerading as search results for a popular game. ClamAV and ML classifiers have identified this file as malicious, specifically a phishing-related trojan. The presence of embedded URLs and the nature of the lure suggest an attempt to direct users to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=metal+gear+solid+1+pc+controls PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4467573/normal_5ff8005299330.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443326/normal_6005f58f89c0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485927/normal_5fda70a4b38d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412896/normal_602be7b7bf87b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454681/normal_5fdf9c2ea91eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421783/normal_600ca84eb492f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445337/normal_5fd65a439081a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468536/normal_602733ce8809b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475863/normal_6020bd2581f49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500668/normal_5fd3569da5cc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420230/normal_601f11968bca9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427811/normal_5ff1e5641d6b5.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/pirofopafu/24945451597.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/91277251886.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/pdf_to_black_and_white_converter_online.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/badlapur_song_raagsong.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/credit_savvy_credit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/zijuxejepak.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/logarithmic_equations_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/monsters_inc_theme_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/nasetesediv.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_off0000dde1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE1 5296 bytes
SHA-256: c3e983fca2b82086be4e5a62f309c5b9f0173cd56fd899a8e86164fa49ba6ccb
font_01_sfnt_off0000f006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF006 11560 bytes
SHA-256: 24aae4bbf87848fc5265b3fe481a1aa38b1796955ef0313472e403edf3e9ba02

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