Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc19ced6e5724464…

MALICIOUS

PDF

82.2 KB Created: 2021-03-31 11:06:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f6cc05d511f2e9e6678f0f1afd7f1912 SHA-1: 9b83e12d07796a4ac74dbe971d8cf84a1a2cb311 SHA-256: dc19ced6e57244646ee47088b16a33c76f8365b8fa03946ced82da1895b9b57d
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 0.9996

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://mezovuduw.ru/123?utm_term=factual+report+generic+structure PDF link annotation
    • https://cdn.sqhk.co/vogoxaginoje/rhjhiaX/zegawidud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495838/normal_60505cf5703e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366984/normal_5fffd2886e02c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485576/normal_60292d025e349.pdfIn PDF document text
    • http://zatutajijiti.getenjoyment.net/jifixezexu.pdfIn PDF document text
    • http://saniwofixapu.mygamesonline.org/asvab_book_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501659/normal_6049165d92ab9.pdfIn PDF document text
    • https://cdn.sqhk.co/legifenobir/6EjaxMY/spielberg_meaning_in_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/xewafazuk/kQMhghf/38245650140.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/mgchjhh/silicon_valley_season_6_episode_3_imdb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kabuzore.atwebpages.com/32424667300.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/how_to_fill_out_direct_deposit_form_for_work.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67560ef9-6689-4b5a-a9e1-e79dc66ad62d/common_core_standards_ela_grade_8.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/how_to_dye_hair_natural_color.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72485f02-c9a6-4e92-ade3-13f8a54ef63d/forrest_fenn_treasure_found_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/suntrust_bank_branches_in_nj.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/tarzan_the_ape_man.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f73661b8-3f97-4f36-997d-7797d29d0003/jurozutunexapupupuxor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1e56aed-2305-4308-b9c1-f6765bd2ec80/2490962020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44787b94-9a4f-4341-bfda-82b8494ff1a3/simple_explanation_relational_database_management_system.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/enfermedades_de_los_organelos_celulares.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_off0000f03f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03F 5056 bytes
SHA-256: 9920e6bbb584d660f39104f80a93d833e0dfd0a3e6121682093a0be81468b14b
font_01_sfnt_off00010182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10182 10628 bytes
SHA-256: 15b2309c5ce1a8bd029ea7bcf8b56b7e6ef0f4ff988383c566c5e10f2e8e1258
font_02_sfnt_off000125fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125FC 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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