Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e18c571fce80dca…

MALICIOUS

PDF

72.3 KB Created: 2021-03-07 09:49:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 06bdfb581b343aa2c615506d54c4fef3 SHA-1: 505158e29373d41334ed96f511b72b5a66ac5c00 SHA-256: 8e18c571fce80dcafb501a7c00ccb31335e1f71c7ba01c04dca0b10de7ab8483
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://fokemale.ru/wix?keyword=certificate+of+attendance+form PDF link annotation
    • https://cdn.sqhk.co/mopomotop/Q5Njjjy/preschool_coloring_sheets.pdfIn PDF document text
    • http://puwexakibo.iblogger.org/mezuramegedewo.pdfIn PDF document text
    • http://matawobedopikam.mywebcommunity.org/13323021616.pdfIn PDF document text
    • http://zazubabifuwor.iblogger.org/xuvajaxer.pdfIn PDF document text
    • https://cdn.sqhk.co/jakufomego/RJtjjhd/close_air_support.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mulerux/teacher_guide_science_10.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/85314699743.pdfIn PDF document text
    • http://nuluwajewugutik.onlinewebshop.net/tissot_touch_solar_titanium_sapphire_crystal.pdfIn PDF document text
    • http://zemipajobo.rf.gd/what_is_the_significance_of_the_great_society.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/ravukenapuvuxurepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6ca7266-1a32-4e3c-a654-59bbed57f966/how_to_reset_navien_boiler.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/how_to_draw_faces_digitally.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/dura_heat_forced_air_kerosene_heater_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/bose_sounddock_series_1_version_2.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/overwatch_lucio_guide_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/abtech_junction_box_datasheet.pdfIn PDF document text
    • http://poluxik.epizy.com/miley_cyrus_butterfly_fly_away_sheet_music.pdfIn PDF document text
    • http://pevipitoz.atwebpages.com/sazusiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a21e354a-1af1-405d-a64e-472f54432334/3d_face_scan_dental.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B1 4768 bytes
SHA-256: db2b59d3959307494d1cbae316de385237e1bbf11e262e1ddc4c363fbc84dcef
font_01_sfnt_off0000e3c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C3 9896 bytes
SHA-256: 68835b8af0be995a5baeb5cc315c643e08186b7cac0e2a2491acf19844dd66b3
font_02_sfnt_off00010595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10595 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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