Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4071049d9e41305…

MALICIOUS

PDF

70.9 KB Created: 2021-03-06 21:05:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b796db886ec2da4415231cd5a90a4b47 SHA-1: 3ba04a435ff3d19d2ec2e66f8948d8a5e4968b30 SHA-256: a4071049d9e4130581a1cf24c9ab140252597971df55a6bdb3aa26e69824e27d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://xezojetit.ru/wix?keyword=superfighters+unblocked+games+24h PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4484835/normal_5fee33852b210.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491437/normal_5ffd7e197f9c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486035/normal_6024c870e00ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369499/normal_5fd7335dc1d38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481527/normal_6024beed11f31.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/cgcggPS/84028681294.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485445/normal_5fd76e70d03f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410731/normal_6007187f6961c.pdfIn PDF document text
    • https://cdn.sqhk.co/towinomer/iiUiegc/devepetunalebokak.pdfIn PDF document text
    • https://cdn.sqhk.co/fafovewidom/hdRDghk/3598449107.pdfIn PDF document text
    • https://cdn.sqhk.co/tagorotage/hgr4qjc/download_taxi_run_crazy_driver_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418747/normal_603d931390ce3.pdfIn PDF document text
    • https://cdn.sqhk.co/fewibefanid/iighejh/givivebiwebakav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417664/normal_5fef8c0a4eb19.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/486fa744-11fc-43b2-921e-23cdacab9f50/american_journey_textbook_8th_edition.pdfIn PDF document text
    • https://2b81f3f0-3f46-42ff-87a7-5865dd96cd3c.filesusr.com/ugd/fb41f9_6530577b69294ea1a04f336a776d4b4f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a206ecb5-bf50-47b2-92cf-e2d7623a085b/how_much_does_it_cost_to_put_in_a_jetted_tub.pdfIn PDF document text
    • https://1864c106-1a4f-4194-99fb-dabd5a0af450.filesusr.com/ugd/17b194_e847f62eaedb4630b64d7ca30be70b98.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5b28abd-14cc-4655-a55f-b9b628504299/26768070504.pdfIn PDF document text
    • https://992bddda-184d-467f-a815-0165b41a2208.filesusr.com/ugd/69695d_50515111b04248b3a321871d5c212294.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9275594b-a310-4461-9ddc-66591e82027d/soyajoy_g4_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2898d96e-ff01-4086-a745-5ebf718b0b7b/7752401923.pdfIn PDF document text
    • https://e0ff2378-281a-4ea3-95ae-419c526fdc99.filesusr.com/ugd/0baf77_dc8f913bc3a7446fa39e4ec6d9cf8be5.pdf?index=trueIn PDF document text
    • https://80172413-d145-4b71-b7cf-4a007d76ad29.filesusr.com/ugd/cacfd7_e7c9e93464374ea395e360c6389b6bcc.pdf?index=trueIn PDF document text
    • https://ecab545c-19d2-4654-b6ac-fb8b9749f5ba.filesusr.com/ugd/e5412a_13cdacdb5eaa4689b8b8d7d0d2468b8e.pdf?index=trueIn PDF document text
    • https://cfc603e6-7cd4-4c42-812b-9722deb80ae4.filesusr.com/ugd/0e9fc2_7b8d06cae6d24df9ace7deaa01e83301.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_off0000d6cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6CF 6096 bytes
SHA-256: 8305273ba2ad2d025f74a6b7a2601a69db983b15441c7dc25612bf336da955de
font_01_sfnt_off0000eb67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB67 10232 bytes
SHA-256: 049caea18a70719b7cfc8cfa17ceaf144233c8a6f6c2e38ccbf5ca53167a0912