Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbed42ce1c916f51…

MALICIOUS

PDF

78.5 KB Created: 2021-04-05 10:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8330cc73aafabf0db78e0f8d9826f2f1 SHA-1: abeaecf9f6c7e861603fc212be1c70d23b3bcf04 SHA-256: fbed42ce1c916f5125a42bbf610f39cc69d4e59da588d75e3b520f9c51405143
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that masquerades as a legitimate search result for study guide answers, likely to trick users into visiting a malicious site. ClamAV and ML classifiers strongly indicate maliciousness, and the PDF structure includes external URI references. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://golowaki.ru/wix?keyword=chapter+6+the+muscular+system+study+guide+answers
    • https://cdn.sqhk.co/zisazege/igc0ahb/evil_catboy_escape_scary_creepy_horror_games.pdf
    • https://cdn.sqhk.co/xidupesijij/hjHicic/best_free_crossword_solver_app_uk.pdf
    • https://cdn.sqhk.co/xuwifoviwalo/SI8idij/sunflower_care_bear.pdf
    • http://sejixuwitu.22web.org/blast_furnace_operation_process.pdf
    • https://cdn.sqhk.co/wawerugile/ghdF2Fq/brick_breaker_game_app_download.pdf
    • https://cdn.sqhk.co/kususarefeja/fbjieJD/chahu_pass_pass_aana_ringtone_free.pdf
    • https://cdn.sqhk.co/giwitosak/BheZAgd/logo_quiz_2020_answers_level_6.pdf
    • https://cdn.sqhk.co/verexumifo/gfJEoR0/download_mod_motogp_race_champions_quest.pdf
    • https://cdn.sqhk.co/wifavizen/jehhKgf/the_last_man_to_stand_lyrics.pdf
    • https://cdn.sqhk.co/minamojazi/gfhdyid/mivebedibatenoripivanas.pdf
    • https://cdn-cms.f-static.net/uploads/4448094/normal_60624c022340e.pdf
    • https://cdn.sqhk.co/piwixesiwufo/eihAnrj/44963028094.pdf
    • https://cdn.sqhk.co/naxusepimosa/eBJgdje/fuvufixetidaje.pdf
    • https://cdn.sqhk.co/xukigipeduve/8OeifeM/43158808806.pdf
    • https://cdn-cms.f-static.net/uploads/4457330/normal_601dd03e038ef.pdf
    • https://cdn.sqhk.co/puwukuwos/ilm8J32/zagabonubodomajibu.pdf
    • http://disojunis.iblogger.org/battin_astrodynamics.pdf
    • https://cdn-cms.f-static.net/uploads/4466379/normal_60552a323761f.pdf
    • http://jisubumutowegur.22web.org/merchant_of_venice_perfume_reviews.pdf
    • https://cdn-cms.f-static.net/uploads/4385415/normal_6066ec28e15b3.pdf
    • https://cdn.sqhk.co/nowonipewo/jfigidb/uk_top_100_music_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ccb8d66c-6301-47eb-99e0-970ab6d2077d/80865743379.pdf
    • http://dexegesen.rf.gd/importance_of_vehicle_tracking_system.pdf
    • https://uploads.strikinglycdn.com/files/82bbfb14-3530-4494-98a3-b8156b0c226b/world_of_darkness_mage_traditions.pdf
    • https://uploads.strikinglycdn.com/files/cc8ce3e5-dc34-4aa2-ab55-cf6b0635422a/samuel_beckett_quotes_i_cant_go_on.pdf
    • http://sizatopus.rf.gd/kavogavuvunumazawupofuli.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_off0000f4b4.bin
b9a5fb92eb0728781bfdcb82714ec74d7aa4f8e5a782c03064e751d0d2e821db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B4 5740 bytes
font_01_sfnt_off0001082a.bin
f4fe201eccdf6f03aba107051c9cfa1c3d4283d1b40cae830cd6fcd86ef52949		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1082A 10392 bytes

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