Malicious PDF — malware analysis report

Static analysis result for SHA-256 95e4662fad0c797e…

MALICIOUS

PDF

79.2 KB Created: 2021-05-01 20:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6769148bad04bd2941ee2cc7e8a0289a SHA-1: 242e45be67f771747e78f7f2d1f31feed9a47fa3 SHA-256: 95e4662fad0c797ea145b6b98110e807264b63a23aa33230c4be376083f6eaaa
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. It contains an embedded URL that mimics a search engine result, likely intended to trick the user into clicking it. The document body, though heavily obfuscated, appears to contain text related to the URL's query, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/strik?utm_term=how+can+i+tell+when+my+sweet+potatoes+are+ready+to+harvest PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sezebepit/stalker_anomaly_install_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84110adc-2d68-40a7-9d05-85afd0739728/verizon_fios_wps_button.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c390e4db-34b3-46b6-9d96-ccfcb1b4575a/how_does_lpg_automatic_changeover_regulator_work.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/fallout_76_enclave_questionnaire_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/is_canon_rebel_t5_a_good_camera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0569b9aa-bcc1-4411-9045-ba3487f60572/2008_jeep_grand_cherokee_srt_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/42619246447.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/1727838569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdadc9e4-7a9c-4f95-9fb8-2334e9971ca8/all_american_pressure_canner_941_ebay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85e3161c-06ac-4909-923d-58a52e00d374/30547291204.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/13381787766.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/dance_basanti_full_video_song_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b015c08b-0b43-4044-a5ef-d5efb2672229/speed_queen_error_message_ed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/175325e1-0519-4a8f-8b1b-72c4d2aa7c25/is_nook_simple_touch_still_supported.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d570a6e-c451-425b-9b11-cf6836fabe66/jericho_lowest_city_in_the_world.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d8f936e-3b36-4b6c-b05d-c9a488de283d/livro_amar_ou_depender_grtis.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/bovine_ephemeral_fever_pathogenesis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9fd3ec6-4027-457a-a674-fc3303edc63d/the_main_difference_between_tcp_and_udp_is_mcq.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae9824c2-ea5c-4353-b6b0-26c81d891caf/61750094208.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_off0000f417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF417 5528 bytes
SHA-256: d53b6bd6386ae5373a9c6186ff8aff37b33f11ab40700c1c940c36475528d78a
font_01_sfnt_off000106cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CC 11944 bytes
SHA-256: dfa2e84c00d700e84e0145e91f4a229b0e5ea32b3192669fc3169df60e87ca3b

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