Malicious PDF — malware analysis report

Static analysis result for SHA-256 afd60c62135e72a2…

MALICIOUS

PDF

77.4 KB Created: 2021-03-05 17:50:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c07d355c3553c6f4d23908642bcad2b SHA-1: 1c0cfe30eecf43b8121b445b86b91ade895deadf SHA-256: afd60c62135e72a2383cb119e8a478c026b38cbb38698553d179b2df4e1d6cf8
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, 'https://jumiwimov.ru/aws?utm_term=excel+formula+not+working+until+i+press+enter', is likely used to deliver a secondary payload or redirect the user to a phishing site. While no scripts were explicitly extracted, the PDF structure and the presence of an external URI suggest it's designed to exploit vulnerabilities or trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://jumiwimov.ru/aws?utm_term=excel+formula+not+working+until+i+press+enter
    • https://cdn.sqhk.co/nowovadizeb/YKhf54H/6356480987.pdf
    • http://jepoletas.iblogger.org/what_is_the_best_18_volt_dewalt_battery.pdf
    • https://cdn.sqhk.co/bimazizuxu/jcIijhp/9237897568.pdf
    • http://dibesugumika.iblogger.org/pemezonuku.pdf
    • https://cdn.sqhk.co/nitunoda/fDUif4Z/rofebo.pdf
    • http://vegofejolafud.mygamesonline.org/ziribijikolakove.pdf
    • https://cdn.sqhk.co/depivuni/oBifbii/sosokorurutezefivetawisos.pdf
    • http://wedipum.mygamesonline.org/who_are_the_top_cloud_computing_companies.pdf
    • http://jaxagogilexet.sportsontheweb.net/jifugeza.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xakapudakadu/lifosinajaliseleri.pdf
    • http://forezepolutaju.onlinewebshop.net/is_the_pa_notary_test_hard.pdf
    • https://s3.amazonaws.com/tupofelasujewas/dna_rna_structure_worksheet_answer_key.pdf
    • http://zikimopotefeva.epizy.com/1331112317.pdf
    • http://bupagaruwizuzu.epizy.com/how_much_does_a_cochlear_nucleus_7_cost.pdf
    • http://pazalijof.epizy.com/dark_night_book_summary.pdf
    • https://s3.amazonaws.com/nufidibodudulad/aruba_controller_7005_firmware.pdf
    • https://s3.amazonaws.com/dagasopones/aashiq_banaya_aapne_movie_songs_free.pdf
    • https://s3.amazonaws.com/pevarijidasalop/antivirus_software_for_android_devices.pdf
    • http://gipipirerogarul.rf.gd/33280335523.pdf
    • http://forofadikov.rf.gd/how_to_run_visual_basic_program.pdf
    • https://s3.amazonaws.com/fedufiporara/88821740957.pdf
    • http://xomasesusor.epizy.com/36806967624.pdf
    • https://s3.amazonaws.com/rolefosiju/sy_bsc_computer_science_books.pdf
    • http://nulanajivokavos.rf.gd/toro_wheel_horse_14-38_hxl_parts.pdf
    • http://likasiz.epizy.com/employment_letter_of_offer_template_nsw.pdf
    • https://s3.amazonaws.com/gurowozenupifi/loletojapirumodo.pdf
    • https://s3.amazonaws.com/bulujono/video_game_design_books.pdf
    • http://dowuvoduwitovos.atwebpages.com/chrono_cross_strategy_guide_download.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eee2.bin
fc7e59a9fab271cd81c0e8a0081afd4f443b4c41dfd2696cffa0142a44d899db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE2 5516 bytes
font_01_sfnt_off000101ae.bin
f3a985fb63346cdbf7a7d7a87b94ac9acc28c916d3cbf048881eaee9862b4d6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101AE 11080 bytes

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