Malicious PDF — malware analysis report

Static analysis result for SHA-256 b419b2a793163bd3…

MALICIOUS

PDF

78.4 KB Created: 2021-02-12 17:39:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: d878bbcee72c5ada532ee90f4ee64a57 SHA-1: 946a7eeebe59ab186b8d1ffed63d69f30e7fbac1 SHA-256: b419b2a793163bd3736b93cbbec45e96b62d1ae2639869b06c13ad27f57e878d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, which is a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URL likely leads to a phishing page or a download site for further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=tri+corner+hat+pattern PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4484122/normal_5ff498c871a3e.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/jhM4ahe/fajalilinononuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413718/normal_5fcbff2f7f89f.pdfIn PDF document text
    • https://cdn.sqhk.co/sopiloroda/0hft6if/bloons_adventure_time_td_free_online.pdfIn PDF document text
    • https://cdn.sqhk.co/pasivuzuke/02MEicg/nomuvewejigobuxifikuwirel.pdfIn PDF document text
    • https://cdn.sqhk.co/puninuzono/gNijjcQ/venmo_ppp_application.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/marimejerebo/173410600.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/47619057607.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/everything_at_once_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/tucker_beathard_rock_on.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/exponents_worksheets_grade_8_doc.pdfIn PDF document text
    • http://pikawin.rf.gd/river_flows_in_you_guitar_music_sheet.pdfIn PDF document text
    • http://melitere.epizy.com/isc_class_12_maths_syllabus.pdfIn PDF document text
    • http://nowavef.epizy.com/ginopot.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/mersal_arasan_varan_song_free.pdfIn PDF document text
    • http://kazaxese.epizy.com/63418429681.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/college_algebra_clep_study_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE351 4760 bytes
SHA-256: 568d69ba50bb2d686809068de652e0d34926bb505e32a3694a099a1e99529a06
font_01_sfnt_off0000f379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF379 10308 bytes
SHA-256: 60f61bd882313f4209461c659db1faef0ceda6766388731f1a1c93d625557bb9
font_02_sfnt_off000116f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F5 16376 bytes
SHA-256: 069f5cdcb972b33999f3dc18a3e5b847fc2aa024b7c5b45b4734cedf253a8e5c

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