Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c7d44d9720e70b0…

MALICIOUS

PDF

82.9 KB Created: 2021-03-16 11:10:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72383551f6340c7563bbaf1be4d4707b SHA-1: dce789ca325daeb6f684974d83d6e4ec5e7cd864 SHA-256: 8c7d44d9720e70b0288cb15a8127f26383125c77efb467cd89ac56141ef9285e
104 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to 'nursery rhymes' and 'video free', suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jumiwimov.ru/123?utm_term=abc+nursery+rhymes+mp4+video+free
    • http://meetsol.xyz/what_is_the_half_blood_prince_movie_about96hq0.pdf
    • http://fijigud.22web.org/ihss_timesheet_replacement_san_francisco.pdf
    • https://static.s123-cdn-static.com/uploads/4413469/normal_5ff9ae3555726.pdf
    • https://static.s123-cdn-static.com/uploads/4365589/normal_5fe44f10cf6b7.pdf
    • http://myfirstsite.xyz/adobe_photoshop_camera_apk_mod2rg1h.pdf
    • https://static.s123-cdn-static.com/uploads/4501054/normal_5fc86a186b227.pdf
    • http://haustova.com/where_are_copeland_compressors_madelcel3.pdf
    • https://cdn-cms.f-static.net/uploads/4481423/normal_5fe6ed460ab1a.pdf
    • https://cdn-cms.f-static.net/uploads/4495973/normal_6028e83fb9e78.pdf
    • http://kuxuvajivor.iblogger.org/zegamu.pdf
    • http://tixshopclub.fun/free_blank_sheet_music_for_guitar97ij7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://genukofuseti.epizy.com/artist_biography.pdf
    • https://s3.amazonaws.com/bojafazes/netidipogizizolopixox.pdf
    • http://topukonas.rf.gd/89134672503.pdf
    • https://s3.amazonaws.com/gonafoziguwewe/discount_coupon_html_template.pdf
    • http://lojosikol.epizy.com/88503705159.pdf
    • http://dubaduvuk.rf.gd/bleacher_report_wwe_crown_jewel_results.pdf
    • https://s3.amazonaws.com/zarelusipofox/artex_elt_c406-_2_installation_manual.pdf
    • http://razebegapusej.rf.gd/cellulose_fiber.pdf
    • https://s3.amazonaws.com/nuruvapozixix/casio_fx-_991ex_manual.pdf
    • https://s3.amazonaws.com/xujitezu/water_balloon_games.pdf
    • http://filexumif.epizy.com/89669387487.pdf
    • https://s3.amazonaws.com/pusori/alcester_school_uniform_shop.pdf
    • https://s3.amazonaws.com/xakusineba/student_registration_form_in_html.pdf
    • https://s3.amazonaws.com/lopadivupudexa/59016300290.pdf
    • http://wigelasipop.rf.gd/justification_report_in_excel.pdf
    • https://s3.amazonaws.com/gidibesuxi/54719586363.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e661.bin
a25576c3865ae4834f92a40aa421aee53ec6ca1fbcdb2d563512218281b8bc3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE661 5532 bytes
font_01_sfnt_off0000f919.bin
df2029bfe20054b07e0f7a6812951687c3bb363239efb233aed203999963d0af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF919 11380 bytes
font_02_sfnt_off00011fb0.bin
1df41416ece054d3cca32f135e48dc95f4d9c8a2bff4ba4edba1d14e21aabef6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB0 18776 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.