Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff4ca9e531bc74c…

MALICIOUS

PDF

87.1 KB Created: 2021-04-04 19:22:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 10edbab62b84f5719a0cc4c7f9a6a999 SHA-1: 67008689730c68046a22399e8494ca89937565a9 SHA-256: 7ff4ca9e531bc74c804204751abf34b61b88bfef0fc7a2e670b2f2765fe623ba
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 0.9995

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://jacksth.ru/award?keyword=roman+catholic+prayers+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455659/normal_5ffa0e70f2096.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369927/normal_5ff9fbb43ef0b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409110/normal_5ff24f782bd41.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387698/normal_5ffaad6dde1cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393359/normal_5ff652a4493fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379839/normal_5fe4a65f5fdaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487424/normal_5fdb1e97786c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419642/normal_6036c0c354198.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464311/normal_5ff82792d9ece.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462093/normal_60345eb47e53f.pdfIn PDF document text
    • http://sutiwejepeb.22web.org/lean_canvas_template_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402488/normal_5ff69f128525c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382193/normal_6005bce2413d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492286/normal_5fd8f3052f1d1.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://uploads.strikinglycdn.com/files/5512fc7e-350c-4cab-b1e2-7fbf9d6649e7/how_to_become_a_qualified_social_worker_in_uk.pdfIn PDF document text
    • http://fegidil.rf.gd/diagnosis_of_bacterial_diseases.pdfIn PDF document text
    • http://joxumokuri.epizy.com/gixuxini.pdfIn PDF document text
    • http://fizuxobitunoge.epizy.com/boksmart_team_sheet.pdfIn PDF document text
    • http://petenava.epizy.com/virolexojewesomaxiro.pdfIn PDF document text
    • http://wiwafejopof.epizy.com/movevoxogugusuxiridigeb.pdfIn PDF document text
    • http://zuxakenupe.epizy.com/cfa_curriculum_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16d9bcc5-fc7e-47c0-92b0-d52a705aa75b/xidoxesegidikik.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_off00010920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10920 5292 bytes
SHA-256: 65b0da74a616dc06d3fc72b9d0160a877c29f0c50b3a29eda6cf3d501cdf742b
font_01_sfnt_off00011aef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AEF 11740 bytes
SHA-256: fe477cbdf653291b22674725fbd745045210c804d84041abc82162ebbe0a3dda
font_02_sfnt_off0001414d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1414D 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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