Malicious PDF — malware analysis report

Static analysis result for SHA-256 361deaf16671f726…

MALICIOUS

PDF

99.4 KB Created: 2021-03-08 16:57:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 988131a7fa68adfe91140263e74094dd SHA-1: 340489e5bca8bf43324ebba49d6833e34424c7eb SHA-256: 361deaf16671f7260c83ebd1e8e3aa3401b1e618c18779286b49568ecf5a74ec
126 Risk Score

Malware Insights

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

The PDF contains numerous external URLs, many of which are hosted on disposable domains, indicating a link farm designed to redirect users. ClamAV detection and ML classification strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/strik?utm_term=how+deep+can+a+navy+deep+sea+diver+go PDF link annotation
    • http://xulazawelinuze.scienceontheweb.net/skywalker_trampoline_12_ft_walmart.pdfIn PDF document text
    • https://cdn.sqhk.co/xovatapegil/cOjizVz/15572584084.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/MicUeHh/22216041862.pdfIn PDF document text
    • http://vashobereg.com/26799926386v4d47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451363/normal_5fd102efdcc7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404753/normal_5fdbd396aa62b.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/diahahf/67286757408.pdfIn PDF document text
    • http://wegansit.space/gofufep7r8g1.pdfIn PDF document text
    • http://ogranifruit.space/race_timeline_ukk0kj0.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/75087150831.pdfIn PDF document text
    • https://cdn.sqhk.co/duditizonut/5NzPggt/smart_connector_keyboard_for_ipad_10._2.pdfIn PDF document text
    • http://gakagebir.mypressonline.com/what_were_given_emphasis_during_the_golden_age_of_greek_sculpture_brainly.pdfIn PDF document text
    • http://bukapim.mywebcommunity.org/6276832515.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375885/normal_60067138f0c99.pdfIn PDF document text
    • https://cdn.sqhk.co/mifodirula/cghjd4c/56542722128.pdfIn PDF document text
    • https://cdn.sqhk.co/xiponamoribo/70jcrD8/weesprout_silicone_baby_food_freezer_tray.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/gYhfSFJ/best_free_ringtone_apps_for_android_phones.pdfIn PDF document text
    • http://submonster.xyz/ladawunaxigipezamcsaoq.pdfIn PDF document text
    • https://cdn.sqhk.co/sowodopevew/hQjiWji/39829327231.pdfIn PDF document text
    • http://xufamorazogubov.sportsontheweb.net/how_to_tell_the_difference_between_inkjet_and_laser_printers.pdfIn PDF document text
    • https://cdn.sqhk.co/videgogaf/HgfIkdS/tiki_taka_movie_mp3_song.pdfIn PDF document text
    • http://gapilojazixo.getenjoyment.net/6.0_powerstroke_intake_torque_specs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://toxifiv.myartsonline.com/camera_angles_in_filmmaking.pdfIn PDF document text
    • http://duxepivol.myartsonline.com/how_do_you_set_the_time_on_a_timex_indiglo_watch.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/dyson_dc41_animal_troubleshooting.pdfIn PDF document text
    • http://penanaras.myartsonline.com/jawumanex.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_off00014583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14583 5424 bytes
SHA-256: 0b46113d8bfae0f69688a4c9552e094c203313c998707aa181751e7edf5d1ce4
font_01_sfnt_off00015822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15822 12020 bytes
SHA-256: 97b63d0d8bbba353c8a26ca02b5c97f7e13cc426880c9f6fda241706fe9be89b

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