Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bfaf45e44c9986e…

MALICIOUS

PDF

76.2 KB Created: 2021-03-30 18:15:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a3b89944c6d4460df0c49a3b87be3a65 SHA-1: ec256d50af7f0d1f3e210d45ebbeb29a6980ff77 SHA-256: 0bfaf45e44c9986e86ec513e66162848c7dff743f86f3286aaf9ca35b64e18a8
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 0.9991

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://druttle.ru/123?utm_term=weather+report+in+kolkata+west+bengal PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377379/normal_603ddfa3ae1f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466659/normal_60054e3fb142c.pdfIn PDF document text
    • https://cdn.sqhk.co/sabumijobude/njijfig/craft_pocket_3d_apk_mod_gems.pdfIn PDF document text
    • https://cdn.sqhk.co/sadirorig/TajfzNO/guns_and_glory_heroes_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393904/normal_5fdc5e77716f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422180/normal_6024c3f8f2dea.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/Av5hiLR/swords_and_sandals_2_redux_build.pdfIn PDF document text
    • https://cdn.sqhk.co/vijukifezu/Z7jggiF/minecraft_zoo_and_wild_animals_mod_download.pdfIn PDF document text
    • http://depofukug.iblogger.org/48434328320.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/ijgcKja/58735366426.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/vutame/4g_lte_signal_booster_network_apkpure.pdfIn PDF document text
    • http://zobagef.epizy.com/autoconhecimento_psicologia.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/why_does_my_new_fire_alarm_keep_beeping.pdfIn PDF document text
    • http://jezawirigi.epizy.com/ruwowifomepuzidegan.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/story_robert_mckee_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/cancionero_cristiano_con_acordes_de_guitarra.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/best_cheap_android_phones_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/bojangles_biscuit_calories.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/christmas_carols_piano_solo.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/xusumalexumafakawam.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/2001_dodge_2500_rust_repair_panels.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/factory_reset_android_using_pc_software.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/loriwilegoborida.pdfIn PDF document text
    • http://bedozev.rf.gd/12697716821.pdfIn PDF document text
    • https://s3.amazonaws.com/dagasopones/biogeochemical_cycles_review_sheet_answers.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB91 5392 bytes
SHA-256: 5cf1f409754dc5b6fc66ccff696584f2548d1e47470d4df3f03b848a7fce5114
font_01_sfnt_off0000fdf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF8 10820 bytes
SHA-256: 8ee67b9e8f215327e7e0d2d77115d5202f53ff265e079b5964a54c4265a0af50

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