Malicious PDF — malware analysis report

Static analysis result for SHA-256 08d97d27af12e20c…

MALICIOUS

PDF

81.9 KB Created: 2021-03-09 07:29:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 948156e7d4f20203643cb0a4213bf02f SHA-1: 69a86d34840f388c7f728ff3250f8e385b5613db SHA-256: 08d97d27af12e20cda3bbc03d2ae08af1c2414ad519b6e968c9d34b0233501b7
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://baarspo.ru/123?utm_term=tefal+air+fryer+recipes+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4528959/normal_5fd615ca9711f.pdfIn PDF document text
    • http://jirusulixozome.scienceontheweb.net/bill_of_exchange_notes.pdfIn PDF document text
    • https://cdn.sqhk.co/pedidagow/icjdiiJ/sellhound_app_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/xasurila/fG3CjjV/jilon.pdfIn PDF document text
    • http://romeital.space/wabadoparogasope7ghmk.pdfIn PDF document text
    • http://politach.com/how_to_reset_a_samsung_tv_with_a_black_screen1b2lw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409246/normal_6019a21592aa2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456387/normal_6000c2bb97420.pdfIn PDF document text
    • https://cdn.sqhk.co/gutinisiv/gfsijxk/89516941756.pdfIn PDF document text
    • http://binixoloxagaj.iblogger.org/75381571144.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391909/normal_60139626218fe.pdfIn PDF document text
    • http://goodshopsales.xyz/lista_de_todos_los_verbos_irregulares_y_regulares_en_inglesziufn.pdfIn PDF document text
    • http://wipunemobak.mygamesonline.org/xerox_wc_7845_i_specs.pdfIn PDF document text
    • http://simultaneously.space/dragon_king_clash_of_clansrujej.pdfIn PDF document text
    • https://cdn.sqhk.co/gobisofokox/cjhgjhd/26384788909.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopaji/rwKFQjh/retro_snakeskin_belt.pdfIn PDF document text
    • http://paypallsecurity.com/19937802186ba4qs.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://wezebiwudure.epizy.com/upenn_logo_svg.pdfIn PDF document text
    • https://1b65b899-5fad-42bd-af9e-a3fb1d6a4c80.filesusr.com/ugd/a2ebd8_856944e784b34294b3fe8066f14c2711.pdf?index=trueIn PDF document text
    • http://zutibebasonuf.epizy.com/logerawinokorapek.pdfIn PDF document text
    • http://gevejonitu.onlinewebshop.net/kelly_services_work_from_home_apple.pdfIn PDF document text
    • https://044ec7df-721b-4788-b209-87474a3fcb06.filesusr.com/ugd/60ffa2_7ae8eda485ad44bc8360f6a34291c97c.pdf?index=trueIn PDF document text
    • https://8a89c5bc-485b-4808-980c-66c60e8d9908.filesusr.com/ugd/834936_a290a7856ecb4123b5cf870fea96dbfd.pdf?index=trueIn PDF document text
    • http://nugafafekovad.epizy.com/zerixewasi.pdfIn PDF document text
    • https://a7474f5d-6ec7-41e4-954d-8cb0a6a0c5ec.filesusr.com/ugd/b987d2_8e8562bb6fde4259a721b7b00316ee7e.pdf?index=trueIn PDF document text
    • https://9fb0fece-6c2a-4f8b-8ff1-5d9ea67f5ee7.filesusr.com/ugd/f6a907_47412ada237d4c398d29c687139621f2.pdf?index=trueIn PDF document text
    • http://fajazimigig.atwebpages.com/najuxaludej.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_off0000f6da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DA 4692 bytes
SHA-256: 6e6c443a8780fb1c0e1a98fdc880a4f7b2d22565bdf1342c5d27e0287af0aeb8
font_01_sfnt_off000106e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E0 10820 bytes
SHA-256: 7f64eec7b753b87930802a6892b13144527ba7956fca48eea070e6f23124048f
font_02_sfnt_off00012ba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BA9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2