Malicious PDF — malware analysis report

Static analysis result for SHA-256 cea32061fff44096…

MALICIOUS

PDF

87.6 KB Created: 2021-02-18 19:16:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: db1be784a94d3bda2073b99298d434be SHA-1: 0058ecb4667faacbe2c02858096221bd9ebaf055 SHA-256: cea32061fff440967095a2455e458e0a88ecdab571a2d5f10a719b3fa1ed2453
154 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to malicious infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic and ClamAV detection. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to 'How to convert mini dv tapes to mac', suggesting a lure to disguise the malicious intent of redirecting the user to a potentially harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/strik?utm_term=how+to+convert+mini+dv+tapes+to+mac In PDF document text
    • https://cdn.sqhk.co/nupozifulija/iifkiiM/tomb_raider_coastal_forest_ghost_hunter_locations.pdfIn PDF document text
    • http://sfr-webmail.com/mowuwudewuboritudz1cx3.pdfIn PDF document text
    • http://reetodo.online/miravevupovekutifefibadoemt6.pdfIn PDF document text
    • http://nicechange.space/how_much_does_laptop_hinge_repair_cost9njav.pdfIn PDF document text
    • http://white-x.fun/free_ubuntu_14._04_32_bit_os3kw1u.pdfIn PDF document text
    • http://hookup154.space/79724677920om2zd.pdfIn PDF document text
    • https://cdn.sqhk.co/filomada/hcSnjj4/dixie_damelio_song_remix_official_video.pdfIn PDF document text
    • https://cdn.sqhk.co/wupefukawis/jbjigff/royal_caribbean_international_number_of_ships_names.pdfIn PDF document text
    • http://bitukab.iblogger.org/bepevefuwaremetoloruzu.pdfIn PDF document text
    • https://cdn.sqhk.co/vabolepibe/jghalha/dream_league_soccer_kits_barcelona_2020_download.pdfIn PDF document text
    • http://opsnatur.fun/40397601352mmaps.pdfIn PDF document text
    • http://help-feedback-amzn8.xyz/how_to_write_a_paragraph_about_your_favorite_foodb57xw.pdfIn PDF document text
    • http://usesalle.xyz/muxikexnoeva.pdfIn PDF document text
    • http://zoom-omsk.ru/32886882498w0d5a.pdfIn PDF document text
    • http://usechambre.xyz/kawasaki_bayou_250_service_manual4zq1n.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/vuzotisenixava/18857334285.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/28438825772.pdfIn PDF document text
    • http://kagowuv.epizy.com/resedikekazilalaserago.pdfIn PDF document text
    • http://beninoduvewer.epizy.com/bluetooth_drivers_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/serivisibej.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/46551735869.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/elliptic_curve_architecture_and_cryptography.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/accel_fx8_command_center_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/pulmonary_arterial_hypertension_guidelines_2018.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_off00011893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11893 5300 bytes
SHA-256: 0bc4f5cadd3166766ec561380ed9f2dcf811a004873e6f3be2932cbc1fb48ad6
font_01_sfnt_off00012a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A92 11224 bytes
SHA-256: 9d2d669b05a8dffa0df76207507cd17f617e9c39121c2e7ae3fd34771f805f36

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