Malicious PDF — malware analysis report

Static analysis result for SHA-256 1edb9848b24e159d…

MALICIOUS

PDF

67.5 KB Created: 2021-04-05 19:30:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 7a0b5107180876d0a81223ddcc4aca6b SHA-1: a236bfa3fe84722e213d36ac6816194e5da8c5e0 SHA-256: 1edb9848b24e159d297872c2a6b4def03f4368b515c6bd66d8f74416c40d818f
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains references to 'game answers' and the authoring application 'wkhtmltopdf', suggesting a lure. A key external URI, https://bologen.ru/wix?keyword=energy+transformation+game+answers, was extracted, which likely serves as the payload delivery or phishing endpoint.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://bologen.ru/wix?keyword=energy+transformation+game+answers PDF link annotation
    • http://jitoletesavi.iblogger.org/3._3_earth_s_spheres_worksheet.pdfIn PDF document text
    • http://health2health.online/nerenibefytp9o.pdfIn PDF document text
    • http://naturfresh.fun/mademosurajexigi4bln1.pdfIn PDF document text
    • http://imedo.ru/daramiminovabandyts.pdfIn PDF document text
    • http://canlisohbetim.net/dell_ultrasharp_u2410f_specs5y4cy.pdfIn PDF document text
    • http://itawomen.fun/5_relationships_of_confucianismlea3i.pdfIn PDF document text
    • http://com-signto6.xyz/3d_printer_metal_car_partsdbkpc.pdfIn PDF document text
    • http://present-mag.ru/4577632750039k75.pdfIn PDF document text
    • http://gratoram.site/lbf_in3_to_n_m31xith.pdfIn PDF document text
    • http://azakalaza3.xyz/85807396187c12n4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xavujoz.rf.gd/bluebeard_short_story.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/what_test_strips_does_freestyle_lite_use.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56843d45-a710-486a-8461-b1d9ba38ab9e/safety_siren_pro_series_3_manual.pdfIn PDF document text
    • http://zexizel.epizy.com/how_to_best_charge_nimh_batteries.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/yahoo_messenger_11._5_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/bissell_pet_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/email_signature_template_adobe.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/communism_and_capitalism_dbq_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a54ab35-72af-4577-8443-9389fa869fee/73913744394.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/intercessory_prayer_points_for_the_sick.pdfIn PDF document text
    • http://nowivopikuzud.epizy.com/koxatib.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/iphone_imei_check_all_information.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/harry_potter_half_blood_prince_game_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/ronco_showtime_rotisserie_and_bbq_oven_5000_platinum_edition.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_off0000cb80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB80 5208 bytes
SHA-256: a791778cd18287e11cfb885355f5634908c5fab56824fa0092d102c91e330062
font_01_sfnt_off0000dd3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3E 9800 bytes
SHA-256: 9746e1eeeb25e9fd8baed921556a15f71eed0e184fa22cf71b977fa79226820b

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