Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a4e06612432cd55…

MALICIOUS

PDF

93.9 KB Created: 2021-03-09 14:29:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: cc8e874ec8b0a0e40c5ff9106b961ec5 SHA-1: 71b93eb6d6af9ee7bfcb697d59bfb901f0b78394 SHA-256: 8a4e06612432cd55f829e3bfdf72f986e18f27b1c15210cf38864d179cddfa7a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. ClamAV and ML classifiers strongly indicate malicious content. The document body, though heavily obfuscated, contains references to 'Classic traveller rpg pdf' and 'wkhtmltopdf', suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://xajibur.ru/strik?utm_term=classic+traveller+rpg+pdf PDF link annotation
    • http://zedateve.mypressonline.com/jezuloxuxiwegavidaz.pdfIn PDF document text
    • http://katipef.medianewsonline.com/86230622564.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0e428e3-4e10-4df1-9dfa-97e1f5e6249e/onion_writing_fellowship_2019.pdfIn PDF document text
    • http://pewubik.atwebpages.com/60129744891.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/85128742420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e1fe4f4-ff9d-4a53-b1c6-91a68b4d65de/metro_last_light_redux_d6_walkthrough.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/bozivozajozipinuxo.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/adverb_of_time_place_and_manner_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/795e2d1e-d11f-4dc6-b315-a0a1731fa2c7/manual_da_impressora_hp_deskjet_3050_j610_series_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/24014929169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04d734ec-52a9-48d5-b7ef-ceaf332dece4/what_does_vanya_do_in_the_umbrella_academy.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/dusetobotutetir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f8d394b-8f3c-4f32-9c82-248bfacc031b/spinozas_ethics_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/462f23b7-198f-49a1-b176-eee575e917d6/how_to_sell_your_options_on_thinkorswim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbeb749c-582d-489d-9313-f61386d693e8/release_your_brakes_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/comment_assembler_2_en_1_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/tisakidirivujatagesufop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bb1351e-f1d1-4a2c-bfb9-a55449e1e176/customer_service_job_description.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/31657067622.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c417cd9a-446b-48df-a81f-da9c8d16a159/does_dollar_general_pay_holiday_pay.pdfIn PDF document text
    • http://rogofideb.onlinewebshop.net/21193631297.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/dopovitifujabolu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3700eeb5-4026-4aac-baec-fb7d9a6e5645/73737584252.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/aararum_kaanathe_song_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/gogatomo.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/xifemepebilixemef.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_off00013118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13118 5288 bytes
SHA-256: 2f69469a717c41411847e55d2653beceaa02259e060bf1f6f1fa15e49195aeb9
font_01_sfnt_off00014329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14329 11384 bytes
SHA-256: 6ecdd847785e0cf2afd2e2ed0b335fe7266e8718cfa4fe4be2594cf55fac3c81

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