Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8783c442ab78446…

MALICIOUS

PDF

73.0 KB Created: 2021-06-08 19:03:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0e7cefa9762505a6db6d89406c42f71c SHA-1: c79c28712122ad60ceb364fd086a6a4f5e001197 SHA-256: b8783c442ab7844653ff875b97e429c7de9d9ac450d066bc396799daea15ecc4
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a phishing site. ClamAV detection and ML classification strongly indicate malicious intent, specifically phishing. The document body, though heavily obfuscated, contains text related to 'Investment management association guidelines', likely a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://soxebez.ru/123?utm_term=investment+management+association+guidelines PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379234/normal_5fc5ebdd52c5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420036/normal_606760772f274.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387037/normal_604d7a863fa53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455403/normal_603d91b67d551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372723/normal_6016bebd14469.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369179/normal_604e12a5e7dec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408483/normal_601bf94a83d61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465400/normal_5ff53fca4b4e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494432/normal_5fe266e04ed30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383680/normal_5ffb5f7a8c3f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425727/normal_6005a96e05fb9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445119/normal_5ff12140e9afb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://taxexuwej.pbworks.com/w/file/fetch/144432027/why_low_beam_headlight_doesnt_work.pdfIn PDF document text
    • http://lufokomarib.pbworks.com/f/donukiwoja.pdfIn PDF document text
    • http://savavaze.pbworks.com/w/file/fetch/144471303/best_table_topics_game.pdfIn PDF document text
    • http://sisagexal.pbworks.com/w/file/fetch/144881145/bambukat_full_movie_download_480p.pdfIn PDF document text
    • http://furalagaposu.pbworks.com/f/lejip.pdfIn PDF document text
    • http://tirotibixup.pbworks.com/w/file/fetch/144785424/watch_free_hindi_movies_online_free_without_downloading.pdfIn PDF document text
    • http://wuxikadafi.pbworks.com/f/77925854438.pdfIn PDF document text
    • http://siwuromo.pbworks.com/w/file/fetch/144425223/what_are_bipolar_junction_transistors.pdfIn PDF document text
    • http://jaxonewu.pbworks.com/w/file/fetch/144643140/40172827877.pdfIn PDF document text
    • http://wekibivu.pbworks.com/w/file/fetch/144435423/how_can_i_start_dropshipping_with_no_money.pdfIn PDF document text
    • http://wefolevemud.pbworks.com/w/file/fetch/144626019/senibukipiwevojonitegero.pdfIn PDF document text
    • http://pusurupufem.pbworks.com/w/file/fetch/144797109/el_prncipe_de_las_mareas_pelicula_completa_en_espaol_latino_gratis.pdfIn PDF document text
    • http://xugatun.pbworks.com/w/file/fetch/144673389/nasexuvapokosavasobejilim.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d49e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD49E 5040 bytes
SHA-256: b98c198a2476ce42eb669376f102adbc8f633575ed1e7394bdc22936afbf4e14
font_01_sfnt_off0000e5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AA 10180 bytes
SHA-256: 60806672a93ab5a35abc27933487d11f7d06652d41c44860923f31db6fe1281f
font_02_sfnt_off0001083a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1083A 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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