Malicious PDF — malware analysis report

Static analysis result for SHA-256 c82387268fdd11be…

MALICIOUS

PDF

80.0 KB Created: 2021-03-09 19:01:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 13bd69f5c67fe1c8d34c203f4d4553f1 SHA-1: 5a95a720d8fd99b1d07b61d78364572d9573f307 SHA-256: c82387268fdd11bea23ea9729a1a397494813b519b2a3532e62c3848f3551449
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://gimoguvi.ru/award?keyword=scrabble+rules+pdf+uk PDF link annotation
    • http://xakaderinetatu.mygamesonline.org/is_lestat_a_real_vampire.pdfIn PDF document text
    • http://doxugivo.22web.org/excel_2007_worksheet_greyed_out.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383572/normal_6032ffc990bed.pdfIn PDF document text
    • http://hallhq.xyz/wifi_password_saver_apk_downloadpnn5z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483081/normal_6017f7dfe4c81.pdfIn PDF document text
    • http://megahit.space/cinebench_11._5_32_bitdklrd.pdfIn PDF document text
    • http://dmgameplan.com/sundered_trophy_guidenc6iu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447434/normal_5ff9c492863bc.pdfIn PDF document text
    • http://timatesanuvufav.iblogger.org/15643567952.pdfIn PDF document text
    • http://wawesoja.sportsontheweb.net/writing_academic_english_free_download.pdfIn PDF document text
    • http://universityru.fun/topamibiwekabevazejisaw5pec7.pdfIn PDF document text
    • http://xusonawifofi.iblogger.org/sawunilusujibe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444866/normal_5ffbb701c994e.pdfIn PDF document text
    • http://peluxuba.sportsontheweb.net/que_es_el_lienzo_de_la_propuesta_de_valor_brainly.pdfIn PDF document text
    • http://zaduzoronogikex.22web.org/intermec_label_printer_pm4i_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cee4a208-09ac-40e0-983f-4c2cc776acbe.filesusr.com/ugd/5ed537_315e07bf6c35406e8dc17eaacddccbd5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/where_can_i_donate_baby_products.pdfIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/65415003804.pdfIn PDF document text
    • https://36425c1f-c329-48aa-845d-1f8252cb45c8.filesusr.com/ugd/01d500_f327c467c8344042932f93d4c7081c29.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nonabafat/mefewuja.pdfIn PDF document text
    • http://vedudide.rf.gd/oecd_guidelines_transfer_pricing.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/que_es_estilo_de_vida_sostenible.pdfIn PDF document text
    • https://be08d7d4-326a-4801-be9d-4496af17a43b.filesusr.com/ugd/d31907_66888835d18445a182a549cdf7c9611c.pdf?index=trueIn PDF document text
    • https://77047a80-9f17-4504-a563-a097c25ca12e.filesusr.com/ugd/5c8b2f_ec7d6be9c5a64172bce4265883fe6b4c.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE2 5456 bytes
SHA-256: d1ca82f97c9858213cb3434d2da070a1eba94b3ceea0457431077be65c3e7d9e
font_01_sfnt_off00010d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D7E 10828 bytes
SHA-256: d9b62e74228fa95230cd77840b19fe3e0f45acad819b2d08cb32e3b99e224bff

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