Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b491ee264e63e53…

MALICIOUS

PDF

87.9 KB Created: 2021-03-19 12:01:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0422c150270cae406fffc0368b4bda6b SHA-1: 35d6ac386a95435c593447ea05229fa62f39e65d SHA-256: 4b491ee264e63e538ae5106d7465b544f0bcb95f81754f3b4dca03fb180d8aa7
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 0.9990

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://nipisod.ru/award?keyword=attestation+de+vente+objet+entre+particulier+pdf PDF link annotation
    • https://cdn.sqhk.co/zojixemem/jgQ3NeP/planet_fitness_locations_in_yuma_arizona.pdfIn PDF document text
    • https://cdn.sqhk.co/wadupaxi/ji0ggig/internet_marketing_strategy_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/zugivakizo/bribUQn/63718456454.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzemesafe/hehfhd6/rajumumevafatupon.pdfIn PDF document text
    • https://cdn.sqhk.co/kavuweduti/eThciok/there_s_nothing_holding_me_back_remix.pdfIn PDF document text
    • https://cdn.sqhk.co/runudori/EBJibgc/74608813925.pdfIn PDF document text
    • https://cdn.sqhk.co/jogeguzotire/ahdgehe/vedupidafobukax.pdfIn PDF document text
    • https://cdn.sqhk.co/lisakopew/ijajehd/61594905938.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/baxekojojexusol/non_template_strand_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dee7ce1-db04-4752-a204-568d1fa7dda7/best_startups_to_watch_in_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/48070437683.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/iso_9001_revision_2015_risk_management_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/epson_wf_2630_cartridge_not_recognised.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3c3f6e3-0152-43bc-8f85-99ac7a3176cf/things_to_say_to_your_stressed_out_boyfriend.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/womibixebotisiwijeg.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/que_es_la_fe_biblia_reina_valera.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/southwest_airlines_app_for_android_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/26238356760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61bd5734-4086-4a64-a1c9-b22a158d84ae/average_weight_loss_first_month_after_gastric_bypass.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/nkjv_journal_the_word_bible_large_print_leather.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/93884484692.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/pokemon_emerald_walkthrough_sootopolis_city.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF61 5412 bytes
SHA-256: c0d9f8e2c5fddc9d1c6e2578d5ae77320496708c33173c4ad753116f8b4eb598
font_01_sfnt_off000101db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101DB 4280 bytes
SHA-256: 1f39c3e5bd29b5f8dfa39d845b3f7f57de76b20686af164f1ad61990c3b6be44
font_02_sfnt_off0001125e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1125E 12216 bytes
SHA-256: 3940090c21909746e752eea3be4d77345714956fa7092d002b6cb4f28c0bb27f
font_03_sfnt_off000139a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139A5 16208 bytes
SHA-256: f76e53b1165c770ea72ceccb5e808e1d48d2b426d0b5e274530350a00bad707e

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