Malicious PDF — malware analysis report

Static analysis result for SHA-256 db8c55700e800ce0…

MALICIOUS

PDF

85.5 KB Created: 2021-03-10 05:06:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6511486662c53b7e2517c912c6273d2 SHA-1: e720eed4809d9900268bc84f5bca41037882d090 SHA-256: db8c55700e800ce0347b7650c77c5ea3948082834d76d35011a23f9128b8b6ee
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that points to a URL disguised as educational material. This URL is likely intended to redirect the user to a malicious site for further exploitation. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://golowaki.ru/award?keyword=6th+grade+reading+comprehension+worksheets+pdf
    • http://sizoxuk.22web.org/thomson_listening_test_4_answers.pdf
    • https://jukonejidar.weebly.com/uploads/1/3/4/8/134876273/2fe34dfd.pdf
    • http://vixitatevejiwo.getenjoyment.net/burley_dlite_x_australia.pdf
    • http://lamakexo.scienceontheweb.net/where_are_the_tropical_rainforest_located_in_india.pdf
    • http://sopafekidis.sportsontheweb.net/celiac_disease_nutrition.pdf
    • https://vikenefimedok.weebly.com/uploads/1/3/4/3/134390201/ziwoto_duladuz_vozuga.pdf
    • https://bixoriwapavam.weebly.com/uploads/1/3/4/7/134731951/dopiba-tifuvek-gidusexojabap.pdf
    • http://zememor.sportsontheweb.net/super_contra_7_nes_game_genie_codes.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/89600234-1562-452b-9435-533a4a852337/does_t_mobile_offer_unlimited_hotspot.pdf
    • http://rixuroruwe.myartsonline.com/6830940433.pdf
    • https://9df6fdd8-df71-43fb-87ad-b121b2de7416.filesusr.com/ugd/e0d0cf_6874b55b9db2450c86914e8ea58d8131.pdf?index=true
    • http://bigobawavelig.epizy.com/sword_art_online_light_novel_16.5_vietsub.pdf
    • https://b9a4c3d6-4ccf-4d04-9b0f-c2e9c357e15d.filesusr.com/ugd/e5cbe5_7e099df0a4204b5aadf0434268b454c6.pdf?index=true
    • https://254a6a59-343e-4b7e-907c-c4819e171fff.filesusr.com/ugd/decf6f_1db9bf05ad2e4274a0da2a208c9e46c8.pdf?index=true
    • http://wabalegawamiraj.rf.gd/wowhead_bfa_class_guides.pdf
    • https://uploads.strikinglycdn.com/files/f0189389-fa16-4119-9bf0-c41e3c92f180/what_is_journey_to_the_west_based_on.pdf
    • http://megomofa.rf.gd/kolavanofonaxuxofuxab.pdf
    • http://fejasafevavo.epizy.com/98129458511.pdf
    • http://mogigolutatuliz.rf.gd/jilatima.pdf
    • https://ca6b24e6-01cd-4368-a310-1df05077a315.filesusr.com/ugd/11b39a_3fbaf5bc45ec4d0b8d8a76826e6cdc67.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3437e75e-bbc0-4133-9ad6-f930f7a23468/does_it_snow_in_washington_state_in_december.pdf
    • http://porumujowupof.epizy.com/t_fal_clipso_pressure_cooker_6l.pdf
    • https://uploads.strikinglycdn.com/files/36c362ec-5ecf-492b-8b43-f1aae960d2e6/9010767931.pdf
    • http://favukimasinete.rf.gd/maa_tujhe_salaam_song_ar_rahman.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00012fe3.bin
52c9adcca337f49898927ccc1d058a0d959a80d690cbc3b991a60681df79fa66		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12FE3 16888 bytes
font_00_sfnt_off0000f88a.bin
429098ffe3a8a299b4d981b6ab97fa4916b0528b74a8be44188cde1d497bfe39		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF88A 5752 bytes
font_01_sfnt_off00010c05.bin
f918db85e2ddf486a1af4d07500c565c06863434db253e52afbc9bc6112454ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C05 10440 bytes

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