Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eddbf24ae8f102f…

MALICIOUS

PDF

76.8 KB Created: 2021-03-15 04:36:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0a342f48f01724de462c7fed3de7172f SHA-1: aadc48e5041d339d6ed84e9c77db30058f2c6a3f SHA-256: 1eddbf24ae8f102f3764adcb1ff4704afcca4eb6646e30dcea044a08a11023f0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/award?keyword=metabolismo+de+proteinas+bioquimica+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450417/normal_602c76cd81bce.pdfIn PDF document text
    • http://felagem.getenjoyment.net/the_crucible_john_proctor_tragic_hero_quotes.pdfIn PDF document text
    • http://tetizeniwa.mypressonline.com/nipidonexepojiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475208/normal_600cb40145b20.pdfIn PDF document text
    • http://wepisoja.mypressonline.com/remington_700_sps_308_barrel_length.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4a0f17ac-6ce6-4c05-9546-25c48d39d9f7.filesusr.com/ugd/cd79e3_3dd2e0726327401695aa5b5c778c78b6.pdf?index=trueIn PDF document text
    • https://0df6220b-9630-4647-aab6-0d9db69b9d59.filesusr.com/ugd/8b97dd_f3751224270f48d0bf84566d7a11420f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b170039c-88e7-46b1-9b8f-057df38d68dd/how_to_install_sony_surround_sound_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1822463-5c2c-4417-98db-dd88cc3a2490/58217957086.pdfIn PDF document text
    • https://39c3e2ba-dcb8-4bc0-9ed7-0058f02c59d5.filesusr.com/ugd/fd4c29_f0fd9ec97e414cd495f552b53ba56e22.pdf?index=trueIn PDF document text
    • https://5a060084-92f5-4e09-b02e-bbac8bb45871.filesusr.com/ugd/05c943_b8f45cf3ab9d4f71b5f8138429152eea.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/transitive_intransitive_verb_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/fuwulezawuzoga.pdfIn PDF document text
    • https://cf268418-7549-4780-9cff-e39e61b5276c.filesusr.com/ugd/0b1cf2_61b366cef4004680ab890b6e2fc0757d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/getizar/google_drive_website_templates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dfcc0ef-603e-4b0c-a41a-151551258ad3/problemas_porcentajes_6_primaria.pdfIn PDF document text
    • https://3c45aaf8-24f3-4cde-9773-cf44a0a970d3.filesusr.com/ugd/ae7d54_f625e9f6a619431e824ea194369edceb.pdf?index=trueIn PDF document text
    • https://656adf98-7a81-40bd-8d0f-2b9c27d09201.filesusr.com/ugd/268ab1_15f5d642648343b0a0638887e909274a.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7D 5572 bytes
SHA-256: 828e58ff5eab29d44865b8be9634d9bf3d2ba5098f5f6b0b8163e1011c561e98
font_01_sfnt_off0000ff5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF5C 11900 bytes
SHA-256: feea1dc9ed4dc24719437a21e1b946789f4aa79b0c84c9051abeb471efa0dca4

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