Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1ae092c515eae6…

MALICIOUS

PDF

136.8 KB Created: 2021-03-29 19:32:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ae8058027521188bd26e34c0236db1b5 SHA-1: 19ef44f8fcde3624d7c830fa5b5b96e9f6cebc07 SHA-256: dc1ae092c515eae6d47f0a05763fe237bcc845b8d9d008486b1b9732abd1a315
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains an embedded URL that redirects to a website designed to appear as a search result, likely to trick users into clicking. The ML classifier strongly indicated maliciousness, and the PDF structure exhibits characteristics of a link farm on disposable hosting, suggesting an attempt to distribute malicious content or phishing pages. No scripts were extracted, but the presence of external URIs and the link farm heuristic point towards a phishing or content-luring attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 4

  • 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://seumenha.ru/award?keyword=panchatantra+stories+in+sanskrit+language+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4471710/normal_5fe2476f91ab9.pdfIn PDF document text
    • https://cdn.sqhk.co/zajagatetode/iiiIVie/selisumebopowifuse.pdfIn PDF document text
    • http://xovitixekewelom.scienceontheweb.net/metodo_descriptivo_explicativo.pdfIn PDF document text
    • https://cdn.sqhk.co/tajalawad/jdcVBgj/countryballs_map_maker.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486534/normal_600809d76a90f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491173/normal_6059c21109309.pdfIn PDF document text
    • https://cdn.sqhk.co/xolizoxime/atUjbdn/75138607018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390999/normal_601d75fbc8483.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://wusozupit.myartsonline.com/82747635816.pdfIn PDF document text
    • http://pezefaxovojole.atwebpages.com/actuarial_mathematics_lecture_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6684190-27de-48f4-b086-d173eeaccaec/gsm_alarm_system_troubleshooting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aff08ed0-993c-45ab-8e93-570d3879558d/how_to_read_york_furnace_serial_numbers.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/joxixabotasulivo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f01b659b-e2aa-474f-ac28-aa799f13347d/gugipajanubasejotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68f761e7-1099-4b4a-87d8-ed6ba3a58a74/rawosagogoz.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/lafijowenupuzebonagon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1881ba81-853c-43bb-b284-367cf325dd2c/scl-90-r_hand_scoring.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/who_is_responsible_for_fob_shipping_point.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8940c65-f032-47b6-b2b8-a82e5bf77cd2/86304532652.pdfIn PDF document text
    • http://kepewitibafef.myartsonline.com/racconti_brevi_per_bambini_da_stampare.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/av_malformation_brain_radiopaedia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e40660a3-0a8b-40e1-aca3-071855583593/senawumidavonawivi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b1d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B1D0 5480 bytes
SHA-256: bc6e54118f49ac1d696986fe6ed9dca88ce7db5e57114814987e98e9b229e4f0
font_01_sfnt_off0001c473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C473 15664 bytes
SHA-256: d295f247ed4f969e13e354d756723f5a86f415738ea6864c0e29a99fc69ca849
font_02_sfnt_off0001f146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F146 16848 bytes
SHA-256: 81f7bbb70782fdcdafc3330b0626a12019517e15eed065cb9cd65211d089fbfc
font_03_sfnt_off00020958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20958 2828 bytes
SHA-256: c1811f3586668e1c8af4a6cb51fa01f469dbfc6f0bcdf0340a7ba78adaba9573