Malicious PDF — malware analysis report

Static analysis result for SHA-256 92d41ce2e5729145…

MALICIOUS

PDF

72.5 KB Created: 2021-03-04 06:30:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f7a23d6bf0ee3cc63cbc0ee5f820631b SHA-1: a4fd3a4e20bd2fbbbdcb265658c3336612c06733 SHA-256: 92d41ce2e5729145f95209713cca1120ea42b6c7b7243e45fe1d489d02dd1723
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely used for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to a product, suggesting a social engineering tactic.

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://dugedepap.ru/award?keyword=oster+professional+a5+turbo+2-speed+equine+clipper+kit PDF link annotation
    • https://cdn.sqhk.co/zavilisuga/jhifxhg/how_to_draw_basic_cartoon_faces.pdfIn PDF document text
    • https://cdn.sqhk.co/sirepajaku/n6pjojh/74955000813.pdfIn PDF document text
    • https://cdn.sqhk.co/leluforeref/agempii/bubimi.pdfIn PDF document text
    • https://cdn.sqhk.co/kejaxedusuk/gY6geji/carecredit_mobile_app.pdfIn PDF document text
    • https://cdn.sqhk.co/welosezu/0pQiisW/nozogajaz.pdfIn PDF document text
    • https://cdn.sqhk.co/vinasujitupe/gheTpl2/rulebufidesekexagik.pdfIn PDF document text
    • https://cdn.sqhk.co/rapurakoke/IGhbdkU/roads_of_rome_1_play_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367005/normal_603b007b5ac6c.pdfIn PDF document text
    • https://cdn.sqhk.co/dowusutitozi/DBijiiX/new_scrabble_2_word_fun_game.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/vezumobigodub/android_17_vs_18.pdfIn PDF document text
    • http://rofuvawitarul.atwebpages.com/how_to_unlock_dbx_driverack_pa2.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/43548802008.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/aorus_b450_motherboard_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/writing_algebraic_expressions_worksheet_6th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/apastamba_poorva_prayoga_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/baburao_comedy_audio.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB3E 5796 bytes
SHA-256: 3c6c5309559e4c72230f5452816688664fac0e3fa2f4082a759198c025189cc4
font_01_sfnt_off0000ef08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF08 11204 bytes
SHA-256: fac7e42fd5f5b42b4409d089b4243b5e9cb56f05372d7d62a8ffad1c85e19982

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