Malicious PDF — malware analysis report

Static analysis result for SHA-256 04765a40f5010b37…

MALICIOUS

PDF

96.8 KB Created: 2021-03-04 06:55:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4092be7fed8ed6962b42add1d6e61709 SHA-1: 7294dd984215fcbe210d4efbcc3df9d269062b9d SHA-256: 04765a40f5010b3798f5ddf3a74b76ba4a42a9deb67704e0e54a1b609885a7cd
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that appears to be a lure for downloading content, likely leading to a malicious payload. The presence of external URI heuristics and the overall detection score indicate a high likelihood of exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=percy+jackson+and+the+battle+of+the+labyrinth+graphic+novel+free+download PDF link annotation
    • http://dream-stat.ru/madaratetijavjpq4y.pdfIn PDF document text
    • http://eushopvmn.site/why_is_inbreeding_a_bad_idea4uii2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449968/normal_603c5e61120b7.pdfIn PDF document text
    • https://cdn.sqhk.co/waxipefimafa/mpjdjdu/goxopewuvipilunole.pdfIn PDF document text
    • http://lebepufu.mypressonline.com/how_do_i_reset_my_daikin_air_conditioner.pdfIn PDF document text
    • http://jabilevij.mypressonline.com/2500_in_1960.pdfIn PDF document text
    • https://cdn.sqhk.co/xeviremal/jMwkbVP/niziku.pdfIn PDF document text
    • http://delayikapy.xyz/60372767476w5a19.pdfIn PDF document text
    • http://tubipiguposazi.22web.org/xekivafivaxadegupunuvevit.pdfIn PDF document text
    • http://pozebesibi.22web.org/cards_against_humanity_questions_and_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382004/normal_5ffae2504daf8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416299/normal_600091e513acf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kikanelomer.onlinewebshop.net/98290507775.pdfIn PDF document text
    • http://xezepagonozaniw.epizy.com/pabigezegif.pdfIn PDF document text
    • http://dawobamam.epizy.com/express_mens_jeans_fit_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/adjectives_worksheet_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/acls_drugs.pdfIn PDF document text
    • http://fuvarijes.atwebpages.com/62915822983.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/45235483356.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/bijivufamej.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/countermeasure_report_format.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_off00013614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13614 5952 bytes
SHA-256: 2b85c7366475010c24feeecfaa7867b1d9aab84f98107bc2b2fb30bdf94a05bb
font_01_sfnt_off00014a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A6F 12172 bytes
SHA-256: 2e7677b7146814ae89cae14213db961b1310863f779742517365ba6f749e4da3

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