Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad1ab90f8f5c4579…

MALICIOUS

PDF

74.9 KB Created: 2021-04-11 05:03:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a64bc6c07b9cbfbc3cb0cb2b96ae716e SHA-1: be33d232a963c4ffa1a0218dbfb90f8e5c9a0c3b SHA-256: ad1ab90f8f5c45794fe7b1f5ad6942551997ac617f6f3846350589c55aaea4ab
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified by both heuristics and the document body, which points to a suspicious domain. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. The presence of an external URI and the overall detection suggest the document is designed to redirect users to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/strik?utm_term=6+hp+johnson+outboard+motor+fuel+mixture
    • http://rigoditibalun.mywebcommunity.org/70642094308.pdf
    • https://cdn.sqhk.co/kewusikata/xlkzFgh/yellowstone_national_park_lodging_rates.pdf
    • https://cdn.sqhk.co/vizoxaxijojo/Jic9hcU/modern_warfare_season_6_new_weapons.pdf
    • https://cdn.sqhk.co/sadinuko/iJoO2wY/71422309478.pdf
    • http://kidobujugi.mypressonline.com/pdf_to_autocad_converter_free_download_with_crack.pdf
    • https://cdn.sqhk.co/nupozifulija/kghjhjb/best_remix_maker_for_pc.pdf
    • https://cdn.sqhk.co/demexadol/dhjifjc/cs_in_game_sounds.pdf
    • https://cdn.sqhk.co/kejaxedusuk/f2Qctif/20339051203.pdf
    • http://baltika-trans.com/how_to_set_up_voicemail_on_norstar_phonepoa96.pdf
    • https://cdn.sqhk.co/fovulifavu/ii3GnbX/medicinal_chemistry_exam.pdf
    • http://alifan.store/le_corbeau_et_le_rossignol8lpsn.pdf
    • http://kirudikegopoded.sportsontheweb.net/lejakumax.pdf
    • https://cdn.sqhk.co/wabasenenem/g7gih5e/automatic_photo_background_remover_free_download.pdf
    • https://cdn.sqhk.co/nozelenid/YMwKig9/raid_shadow_legends_script_copy_and_paste.pdf
    • https://cdn.sqhk.co/pijuvedozuw/ptif7CE/corleone_online_hack_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bivanud/employee_attendance_management_system_project.pdf
    • https://s3.amazonaws.com/napejaxosinages/1652764306.pdf
    • https://s3.amazonaws.com/sugosubexez/9944646711.pdf
    • https://s3.amazonaws.com/pexodugosa/findings_meaning_in_project_report.pdf
    • https://s3.amazonaws.com/zafijukopa/nursing_cover_letter_template_nz.pdf
    • https://s3.amazonaws.com/tulosa/antony_and_cleopatra_sparknotes.pdf
    • https://s3.amazonaws.com/xedewofuretujo/10026028148.pdf
    • http://kipejefanowisu.atwebpages.com/dejonugek.pdf
    • https://s3.amazonaws.com/wefadep/5040547628.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_off0000e889.bin
e6b3f5d898ec44ffdd407196e72508b618714a2a5cf506a8d5d7bf5e83853e93		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE889 5624 bytes
font_01_sfnt_off0000fb7a.bin
ab7517955b0d8cd42070476e6990fd0ded735b23ef60ec804b757b2c7c1eee01		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7A 10396 bytes

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