Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e252c900f0e0c36…

MALICIOUS

PDF

74.0 KB Created: 2021-06-02 02:53:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: bbd359c3716440a72285a543c6d51254 SHA-1: 585d831ce5d6b7c0bbc374f91fd7e08be704751e SHA-256: 0e252c900f0e0c3677a57cf96a619c1cd30326be8ca2bff0846e728973379fbb
126 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, with a high concentration on disposable hosting, indicating a link farm or phishing lure. The presence of a URL pointing to 'smidgel.ru' with a query parameter suggesting a movie download, combined with ClamAV detection as 'Pdf.Phishing.Trojan', strongly suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://smidgel.ru/pbw?utm_term=bajirao+mastani+full+movie+1080p+free+download PDF link annotation
    • https://zelapagetuwuj.weebly.com/uploads/1/3/1/4/131406140/kikimofape_siwimonodofo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450138/normal_602e382e87b60.pdfIn PDF document text
    • https://wekigenajelu.weebly.com/uploads/1/3/3/9/133999196/leduvisafukone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413239/normal_602d6908454df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368962/normal_602aace5de403.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490140/normal_6018b1f31dd24.pdfIn PDF document text
    • https://fafovufurivu.weebly.com/uploads/1/3/2/6/132695925/9075697.pdfIn PDF document text
    • https://sejiganabukuja.weebly.com/uploads/1/3/4/5/134585043/66cb65123e75d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482618/normal_5fc641724cfeb.pdfIn PDF document text
    • https://palegovod.weebly.com/uploads/1/3/1/0/131070329/gegibefen-xolapem-wekokatojox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487424/normal_602aee39908a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412573/normal_5ffa5d0e74dd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450512/normal_5ff277bf715dd.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://nilanom.pbworks.com/w/file/fetch/144416556/what_is_an_output_force.pdfIn PDF document text
    • http://mikabipi.pbworks.com/w/file/fetch/144432543/27208607712.pdfIn PDF document text
    • http://xedidovetaw.pbworks.com/w/file/fetch/144414867/solar_system_pictures_with_names_in_english.pdfIn PDF document text
    • http://mibegenav.pbworks.com/f/nch_express_invoice_free_registration_code.pdfIn PDF document text
    • http://zemenifinabe.pbworks.com/f/sowakojovikazubamam.pdfIn PDF document text
    • http://mujusevo.pbworks.com/f/la_leccion_de_august_resumen_por_capitulos_rincon_del_vago.pdfIn PDF document text
    • http://gonumutat.pbworks.com/f/anagrams_quiz.pdfIn PDF document text
    • http://liwuvedesisu.pbworks.com/f/assamese_dj_song_download_2020.pdfIn PDF document text
    • http://jutifakukap.pbworks.com/w/file/fetch/144483534/nccer_electrical_level_3_module_3_test_answers.pdfIn PDF document text
    • http://pevozowo.pbworks.com/f/35460256916.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_off0000d2f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F8 5732 bytes
SHA-256: f393c88b6042ba925040497c5a54ac2658bc44e97aa464a6e00da336cc5bd75b
font_01_sfnt_off0000e677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE677 10552 bytes
SHA-256: 3de6ddf06fc45befd2fb75e40ade4fcb99b3c9de7d75fcbc9f5c6d7f3f1853ea
font_02_sfnt_off00010a49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A49 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34