Malicious PDF — malware analysis report

Static analysis result for SHA-256 61df2cd15ad9e893…

MALICIOUS

PDF

72.0 KB Created: 2021-02-08 17:02:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c22d2a06d155bff3e73942d73fdb8034 SHA-1: d528288c1629dce28168eed807e55a520b7291fb SHA-256: 61df2cd15ad9e8933af8b5241f2857f9c88644d424474ef2d5d04ae9da82b99f
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 0.9998

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://jacksth.ru/aws?utm_term=gst+annual+return+filing+format PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470679/normal_5ff110bc7bf34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413111/normal_5ff0b0fe1c999.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_6015b6719ab36.pdfIn PDF document text
    • https://cdn.sqhk.co/jasojime/difiche/53881477745.pdfIn PDF document text
    • http://italiahot.fun/drop_kick_me_jesus_piano_sheet_musickwxv0.pdfIn PDF document text
    • https://cdn.sqhk.co/kamavedes/qQLEife/mekizireguzakizupopagi.pdfIn PDF document text
    • http://idealslimitaly.site/boxawovefalojol17i8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405202/normal_5fe813a720de1.pdfIn PDF document text
    • http://mesretly.xyz/nfl_standings_2018_playoffsyafiz.pdfIn PDF document text
    • https://cdn.sqhk.co/bupitagalir/5zgeggD/xaxaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423454/normal_601908e9b17d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465250/normal_60049311b3ba2.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/sif1Zgh/suborazojokad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385859/normal_5fc943161fda9.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
    • http://kimigabajo.epizy.com/flannel_sheets_queen_christmas.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_off0000d05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD05C 5000 bytes
SHA-256: 8dbde0cecc724198a62b246946b798078efaa7823b50143ee9bb3e8999db38f7
font_01_sfnt_off0000e14b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE14B 10468 bytes
SHA-256: ffd87c54394d4209710e15601eff12a92cfa57092ca0b3dc7a69c631f50182aa
font_02_sfnt_off000104fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104FC 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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