Malicious PDF — malware analysis report

Static analysis result for SHA-256 d35180ea9870848e…

MALICIOUS

PDF

81.1 KB Created: 2021-04-03 13:07:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f70129764f6f0cc44d28a578649c314b SHA-1: afbfc36ae02431e9d40370ba3d7f7a13a27ae98c SHA-256: d35180ea9870848e7483f3fef38815b56693e9b215e58075626ff7549c25d7df
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host or redirect to a malicious payload. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/123?utm_term=farm+animals+sounds+free
    • https://cdn.sqhk.co/tivinarafuvu/hcicri9/lock_screen_wallpaper_android.pdf
    • http://mantenancie.com/go_away_big_green_monster_songem2w7.pdf
    • https://cdn.sqhk.co/wesuwajil/sLGPjeO/asteroid_miner_idle_heroes.pdf
    • https://cdn.sqhk.co/kuzosexiwugu/dihAznN/prop_hunt_free_online_multiplayer_unblocked.pdf
    • https://cdn.sqhk.co/bamosabubesi/ibhg2j4/disable_scrolling_in_excel_sheet.pdf
    • https://cdn.sqhk.co/mawedabe/Ilhh9vy/82274908909.pdf
    • https://cdn.sqhk.co/lojadisexudo/fhhPjez/smash_car_games_free_download.pdf
    • https://cdn.sqhk.co/moxulofilose/dhdfnwH/data_rush_tracking.pdf
    • https://cdn.sqhk.co/mojaribi/74Dih4p/gisezudovezom.pdf
    • http://rastet-malysh.ru/nodosituxikgg8mz.pdf
    • https://cdn.sqhk.co/vamosopon/zhiiaKr/hd_movies_hot_online_free_2020_apk.pdf
    • http://pressit.space/what_are_some_other_words_for_confusedkusgf.pdf
    • http://idealicacolumbia.site/889417013552scfh.pdf
    • http://qwert-ita.fun/nisexitosenacdbkb.pdf
    • https://cdn.sqhk.co/nukusigemug/dc6jihf/tubing_in_colorado_near_me.pdf
    • http://9gusevshop.space/free_shooting_bench_plansbtidd.pdf
    • https://cdn.sqhk.co/guvelebul/jj9AKic/download_commander_battle_mod_apk_2019.pdf
    • http://everydayy.fun/live_minnows_for_crappie_fishingpaflw.pdf
    • https://cdn.sqhk.co/gazegarov/gihdMgh/poxapenuwidanidodakopi.pdf
    • http://pixxel.life/encyclopedie_des_plantes_mdicinalesaqbxt.pdf
    • http://businesshelpservice.com/4th_grade_sbac_practice_test6b88n.pdf
    • https://cdn.sqhk.co/luwagoma/RrSiig0/cdmx_capital_social_uniformes_y_utiles_escolares.pdf
    • http://monoga.space/the_lost_spires_downloadux0yl.pdf
    • https://cdn.sqhk.co/gegenosuzun/ijifmjb/75296138423.pdf
    • https://cdn.sqhk.co/vutazekerubu/jdjhtRU/73874741229.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/cea8a81e-551c-4317-a0b6-5b7080cad7e2/singer_esteem_ii_sewing_machine_reviews.pdf
    • https://uploads.strikinglycdn.com/files/a30a1245-a3cb-4ca1-9c40-b0960efcf958/ielts_essay_samples_band_9_task_1.pdf
    • https://uploads.strikinglycdn.com/files/8416b7a1-ce60-4c36-99db-978043ec8dec/graphic_designer_remote_jobs_canada.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f43c.bin
41fb4847106153762ab85ba1fe131645ce9d17790405a89ede45d086298ebc9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF43C 4808 bytes
font_01_sfnt_off00010469.bin
487413c2b9d93dbcf2fb1a7b3226be2a99d61e7a26b39b6a749ee009fceca4bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10469 10904 bytes
font_02_sfnt_off0001285b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1285B 4324 bytes

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