Malicious PDF — malware analysis report

Static analysis result for SHA-256 b00e1159fb05de60…

MALICIOUS

PDF

93.6 KB Created: 2021-03-15 20:41:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c5b6f6fe837b5a7a370ab7a8a032efbe SHA-1: 1638e05af5ce5d54b92d7eeb7fd7b4d312b82e6d SHA-256: b00e1159fb05de608cc8ab06e5defc8e86565b44bf4077ba04aa38fd01327fa4
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 0.9997

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://ponafet.ru/wix?keyword=actores+de+rapido+y+furioso+tokio PDF link annotation
    • https://cdn.sqhk.co/dasotipamu/jYIxd0N/zudidevo.pdfIn PDF document text
    • http://fuxivipusutipu.iblogger.org/korean_hangul_keyboard_beta_apk.pdfIn PDF document text
    • http://lixuninipakimar.iblogger.org/bozisinujinuwerat.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/aMjazvW/mod_car_minecraft_download_pc.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/xixonu/mulelozejetutifa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fc56376-4d5f-4ab4-ac59-93778c5b260b/best_beaten_down_stocks_to_buy_now.pdfIn PDF document text
    • http://jomufutoxafu.epizy.com/dyson_dc59_problems.pdfIn PDF document text
    • http://lipidojomodu.rf.gd/upsc_cds_eligibility.pdfIn PDF document text
    • http://napipipazapuka.epizy.com/spss_amos_free_for_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/39569672308.pdfIn PDF document text
    • http://wixufoliwesomep.epizy.com/nevinokojadaxikog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f2e9c23-94e5-4204-85a7-b7a3b8f03d46/cuenta_conmigo_pelicula_online_espaol_latino_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be5568d5-2ef1-4f2d-aebc-7be41ed095d1/18756435347.pdfIn PDF document text
    • http://rujujarorimepa.rf.gd/the_book_of_life_cast_death.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/89912230474.pdfIn PDF document text
    • http://nowaginog.epizy.com/99516629528.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/havoc_demon_hunter_talents_guide.pdfIn PDF document text
    • http://vavuniwurezini.rf.gd/86548628040.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_off00012a45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A45 5272 bytes
SHA-256: d9ef1a6e923157838e68c2c3e987534939eb7080541c2bfa94558318e0b09557
font_01_sfnt_off00013c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C55 14044 bytes
SHA-256: ec8eb7190e0ef61825d201c3c4dad99e31e3c2f0dc3b42a8a9c2a000e15e88a7

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