Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4345021be5f8916…

MALICIOUS

PDF

128.7 KB Created: 2021-03-24 22:47:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 044872335e7bbd6fb343cf24e782d72e SHA-1: ded949dbd8e151c7a9423e924ff47d1bc079d326 SHA-256: a4345021be5f8916d22dee1cec5b79becc8061c1a44c5af4c149d355f80bff4e
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, which is a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL, https://midufefew.ru/wix?keyword=swtor+trooper+story, suggests a lure related to a game, likely to trick users into visiting a malicious site.

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://midufefew.ru/wix?keyword=swtor+trooper+story PDF link annotation
    • http://bamimutekinawaz.22web.org/2013_ashrae_handbook_fundamentals_free.pdfIn PDF document text
    • https://cdn.sqhk.co/mifopanikil/yifcrgi/32056390583.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/pgjCigQ/traffic_car_run_2d_special_edition.pdfIn PDF document text
    • http://genonobamubus.22web.org/laser_pico_mainsheet_block.pdfIn PDF document text
    • https://cdn.sqhk.co/purorenutuw/hiiagdu/xufofi.pdfIn PDF document text
    • https://cdn.sqhk.co/xixumobun/gXDKagf/67705615207.pdfIn PDF document text
    • https://cdn.sqhk.co/somepizeko/ndhaK0s/pigoxazewuwimuva.pdfIn PDF document text
    • http://vuxijagodoku.22web.org/the_game_changers_movie_reddit.pdfIn PDF document text
    • http://xewojufedizeno.iblogger.org/intermolecular_forces_of_attraction_in_hindi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/65459912789.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/shark_steam_mop_vacuum_combo.pdfIn PDF document text
    • http://vazojebimuvap.epizy.com/boogie_wit_da_hoodie_drowning.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/36079128980.pdfIn PDF document text
    • http://xukonepuwe.rf.gd/calidad_de_vida_en_el_trabajo_juana_patlan.pdfIn PDF document text
    • http://bopulamumu.rf.gd/betensured_prediction_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/alfonsina_y_el_mar_partitura_violin.pdfIn PDF document text
    • http://voperafabekom.epizy.com/zafolenafumeg.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/89343943365.pdfIn PDF document text
    • http://jukopiwiguf.rf.gd/gunaxewuvaza.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A585 4868 bytes
SHA-256: eee943d5dd8cfe30625728e33cce056179719954eb6a22b30541be0b7dbef210
font_01_sfnt_off0001b636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B636 12908 bytes
SHA-256: e576d588141637ef3ffd3c2b1e212de498e963e88fab332b00379f8dc318ed76
font_02_sfnt_off0001e01b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E01B 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

Open this report in the interactive analyzer, or submit your own file for analysis.