Malicious PDF — malware analysis report

Static analysis result for SHA-256 a93a56c0d62f06a5…

MALICIOUS

PDF

74.2 KB Created: 2021-02-10 13:06:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0264d972f4b1e277c1428f9e50146f9b SHA-1: 0402592d032b2fc537a0ee2ab99e3cb8e8daba10 SHA-256: a93a56c0d62f06a5aa01e210f543d5becf622ad20db01afa274362a8e151cef1
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for phishing or malware distribution. The document body is heavily obfuscated, but the presence of external URIs and the overall detection suggest an attempt to exploit users through deceptive content.

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://seumenha.ru/123?utm_term=drill+master+drill+review PDF link annotation
    • https://cdn.sqhk.co/vuvupewog/Jha7g1P/bijupuvubimi.pdfIn PDF document text
    • http://frukt.space/fexeswzyga.pdfIn PDF document text
    • https://cdn.sqhk.co/nakizenonetu/heabghh/pi_music_player_pro_apk_2020.pdfIn PDF document text
    • http://tesopinafap.22web.org/dead_cells_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/ijgC1us/bewazevosejagimumaga.pdfIn PDF document text
    • https://cdn.sqhk.co/vujejanar/ielmif9/91698907211.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/iCjgiem/73404031291.pdfIn PDF document text
    • https://cdn.sqhk.co/zanotunuzi/hghdgif/first_strike_bar_mre.pdfIn PDF document text
    • https://cdn.sqhk.co/nivuduful/x7jjdge/harrison_bergeron_questions_and_answers.pdfIn PDF document text
    • http://mebel-albero.ru/892777859282eanf.pdfIn PDF document text
    • http://helpverifedbadges.com/competitors_profile_templateha2xh.pdfIn PDF document text
    • https://cdn.sqhk.co/boxepupovemu/sje5hgi/18923338052.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/posaxugidut/bolt_bluetooth_headset_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/the_gettysburg_address_worksheet_answers_commonlit.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/square_root_of_137_in_radical_form.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/boxedegulumomurif.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/free_engagement_invitation_card_templates.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_off0000e4c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C7 5124 bytes
SHA-256: 430d781f11bb650241d289957959b5426ba44d46049f082e1e50b95bc2e8d02f
font_01_sfnt_off0000f62c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF62C 10968 bytes
SHA-256: 727d52c0bebb2f852d1021431a6b39a3523a4730154ef27688c3de5172764734

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