Malicious PDF — malware analysis report

Static analysis result for SHA-256 75dd3323f4058fdf…

MALICIOUS

PDF

91.4 KB Created: 2021-03-22 17:36:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95bf64a4b105af3c44aa84236fd3ec8d SHA-1: 713de1d280cfbf94a8372c4891c175a5025e9ec5 SHA-256: 75dd3323f4058fdf9a6ab45d59f1cb63fc320f76304f1b07a843483eb1a82f70
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

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://dafemum.ru/wix?keyword=enhanced+3rd+person+camera+sse
    • https://cdn-cms.f-static.net/uploads/4489415/normal_601b82d1bcd6b.pdf
    • http://wowitaly.pro/the_leadership_challenge_free_downloadhd84h.pdf
    • http://roskycnmx.com/singer_touch_and_sew_bobbin_not_spinning53ja8.pdf
    • http://obzorov.site/3680780840do4t2.pdf
    • https://static.s123-cdn-static.com/uploads/4421466/normal_5fc8876acf763.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xifabilejilab/jotomodulat.pdf
    • https://s3.amazonaws.com/matogapibelifiv/bushnell_tour_v3_slope_edition_user_manual.pdf
    • http://fefadipif.rf.gd/gojunuwenakix.pdf
    • http://xafamikipu.epizy.com/36598558294.pdf
    • https://s3.amazonaws.com/pipaneku/star_wars_droidworks.pdf
    • https://s3.amazonaws.com/senodiw/93576076168.pdf
    • https://s3.amazonaws.com/gagagakigibapo/tobixiridufemamafuroka.pdf
    • http://dukazel.rf.gd/91472844725.pdf
    • https://s3.amazonaws.com/pujirageg/how_to_manage_change_orders_on_a_project.pdf
    • https://s3.amazonaws.com/gogoxowiniza/40813994280.pdf
    • https://s3.amazonaws.com/babetafaperaxov/47908326703.pdf
    • https://s3.amazonaws.com/mutirexa/quote_acceptance_form_template.pdf
    • http://nanugubodiw.epizy.com/do_universal_remotes_work_on_vizio_smart_tvs.pdf
    • https://s3.amazonaws.com/nevowimo/83327532521.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001272e.bin
3b6e077c953d2b46546c505193f9e08ec2eef74548fcee4be21f051a42b4b615		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1272E 5400 bytes
font_01_sfnt_off00013961.bin
a5743c3e96154c6ec020c7cb55ae3f53a01e573316009262e783c96f21c55642		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13961 12012 bytes

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