Malicious PDF — malware analysis report

Static analysis result for SHA-256 45be5f47883bffe4…

MALICIOUS

PDF

89.8 KB Created: 2021-03-03 08:39:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 0986f29b8b1153365b210056252bc8ad SHA-1: b22a896b9c71e2425c850d7b83afabd4995bdbfa SHA-256: 45be5f47883bffe4b2154e8f8db367eada2a31da94147bd2ecc91892e23bd35c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a website designed to appear as a summary of "The greatest salesman in the world pdf". This is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a secondary payload or conduct a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://mezovuduw.ru/wix?keyword=the+greatest+salesman+in+the+world+summary+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372383/normal_60160c83946a3.pdfIn PDF document text
    • http://zoxifowivo.iblogger.org/simudibibisukol.pdfIn PDF document text
    • https://cdn.sqhk.co/momewoziwoge/jzPieNs/jumping_frog_game_free_download.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/sagotomagin/wonakituvunanujora.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/takularekovigomufesuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/delinebotej.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/geometry_problems_with_answers.pdfIn PDF document text
    • http://semewefiji.rf.gd/14025741403.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/yahoo_groups_all_files.pdfIn PDF document text
    • http://mubozezubudiz.rf.gd/8168151997.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/gakalunezufubare.pdfIn PDF document text
    • http://tapalexajud.epizy.com/96096537375.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/roliw.pdfIn PDF document text
    • http://xunevonobi.epizy.com/vuvunowafubifibubifoxo.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FA 5480 bytes
SHA-256: fc086bceaf42d2f65791b0c4f1b9bdd2f179b26f1dacc8a585c6592465550175
font_01_sfnt_off0001058d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1058D 3008 bytes
SHA-256: 5e46820c45e13bf90bf6dd3f0d29015d6a825dc885c8901e9535caa679c5fae7
font_02_sfnt_off0001123f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1123F 9820 bytes
SHA-256: dea87dd374b2dbb876a99e6d082cfb1a5164990e89c6190d9119029b1f5b89e8
font_03_sfnt_off000133ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133EF 16092 bytes
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073
font_04_sfnt_off000148b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148B7 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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