Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e9cb15b4a2c04b6…

MALICIOUS

PDF

77.5 KB Created: 2021-04-07 03:58:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 0da44bc1c0dc2b332f4da9551152946c SHA-1: 937a2f8498b2180ce1e09e744dd371c375aebfc1 SHA-256: 2e9cb15b4a2c04b6751281e61a67ce643831fd2a757a52247285767be062d20b
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

This PDF document was flagged by multiple heuristics as malicious, including ML classification and ClamAV detection. It contains numerous external URIs and is identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, indicates an attempt to lure the user into enabling macros or editing, a common tactic for executing malicious code.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://golowaki.ru/strik?utm_term=how+to+run+simple+macro+in+excel+with+button PDF link annotation
    • https://cdn.sqhk.co/fapolokid/agc8ihz/20433419084.pdfIn PDF document text
    • https://zizizibewanexu.weebly.com/uploads/1/3/0/7/130776642/63531f8299f3b7.pdfIn PDF document text
    • http://egrn-order.online/insinkerator_badger_5_specifications085lo.pdfIn PDF document text
    • https://cdn.sqhk.co/mugegiduveb/jUXooTo/nenulezopesapefume.pdfIn PDF document text
    • https://piximemob.weebly.com/uploads/1/3/4/3/134371032/fefon-riliwonevabaliw.pdfIn PDF document text
    • https://nakenofol.weebly.com/uploads/1/3/0/8/130814118/begevux.pdfIn PDF document text
    • http://vclean-sale.shop/nozoluwlaa8j.pdfIn PDF document text
    • http://energytik.net/poni_camera_photo_editor_appevb9d.pdfIn PDF document text
    • http://profoto22.ru/how_to_write_a_short_answer_response_for_collegeig34z.pdfIn PDF document text
    • http://netewe5.xyz/how_to_program_minn_kota_ultrexm492e.pdfIn PDF document text
    • https://cdn.sqhk.co/lebapivi/ihjbhhy/dora_the_explorer_world_adventure_full_movie.pdfIn PDF document text
    • https://tewijudejasivi.weebly.com/uploads/1/3/2/6/132682467/fikuxe-timim-sunikuwuzaju.pdfIn PDF document text
    • https://zupuxugemewizo.weebly.com/uploads/1/3/4/3/134309945/tirajuperaba.pdfIn PDF document text
    • http://help-lnstagramcopyrights-verify.com/ejercicios_resueltos_de_destilacion_metodo_mccabe-thielewrruk.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/sumesawoxajew/compliance_management_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/36724401789.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/gutar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2711a539-35c4-4d0a-9044-1c96a55014ad/is_the_med_surg_certification_hard.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03fe8de4-4243-449e-8915-359891a6b6e6/18331509859.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a589c7bd-0b23-4752-b59a-d3cb6028b1e7/jatusugakaderanokef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cae7316b-e79a-43fe-af22-1c2974c05fb9/no_water_going_into_my_beko_dishwasher.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/marcus_aurelius_meditations_online.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f26d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26D 5432 bytes
SHA-256: 1ac30b537e1fef504d602cdd922591d42db92f077d947ff468bd7654b58e37da
font_01_sfnt_off000104c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C5 10448 bytes
SHA-256: 0335fd9ca80ef39c4f05c896f64c8742096374a12a5d232dab66a53bd498f3cd