Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d9d15c977ff511…

MALICIOUS

PDF

79.9 KB Created: 2021-04-03 23:08:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: f4fe2819c52e347a53ef6712de03d663 SHA-1: 9576fcfeb1840cc3d93c3e80b53216f4620963e8 SHA-256: c5d9d15c977ff511f351b60aa1322b97789ae2f12c431fc29005d36447ee20e7
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/123?utm_term=free+sap+basis+training+material+pdf PDF link annotation
    • http://nudistoff.club/kabupaxiwafuxopakobudojuv8ievx.pdfIn PDF document text
    • https://toroborelap.weebly.com/uploads/1/3/4/8/134867907/futodirizo_rujopubo.pdfIn PDF document text
    • https://monibobur.weebly.com/uploads/1/3/0/7/130776122/vubagiribele.pdfIn PDF document text
    • https://tuzejaved.weebly.com/uploads/1/3/3/9/133997948/6d2b41354cc.pdfIn PDF document text
    • http://natur-green.fun/letefezunujusezgktq.pdfIn PDF document text
    • https://vatovuturok.weebly.com/uploads/1/3/1/8/131856009/gumapavu_ziwikon_wizubar_degenapul.pdfIn PDF document text
    • https://sepuvoguzunisam.weebly.com/uploads/1/3/4/4/134488558/valisa.pdfIn PDF document text
    • https://tapituxupali.weebly.com/uploads/1/3/1/3/131382330/5ad79f4c26c3c.pdfIn PDF document text
    • https://gedesinikus.weebly.com/uploads/1/3/5/3/135323437/lisanegesalo-wemawamusi-vijijofab-xizegatana.pdfIn PDF document text
    • http://optalpha.com/rawonujolitonewotobonudk6s34.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ef9935f7-a918-44a1-999f-f1d50a45e4a7.filesusr.com/ugd/b463f2_bae90f351a35434f899d0bf4e17ec3ff.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/novifamigot/ansys_fluent_user_guide_16.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/10226677357.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52aff138-cda9-4bf2-b69f-1799cf291339/92456623779.pdfIn PDF document text
    • https://e4c06157-4c4c-4c30-848d-1ce07482e123.filesusr.com/ugd/99e070_c891b352ad1a43b190972b6f7767f8b6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xeponodij/avengers_3_movie_in_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d385df8b-a5da-44b5-9a45-4924be12e00e/55031001832.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/biugo_magic_effects_apk.pdfIn PDF document text
    • https://4bc473c2-84d0-4913-8b4e-281bf44fba2e.filesusr.com/ugd/a25dbd_5197071e178a4b69af2a49417a5a78b5.pdf?index=trueIn PDF document text
    • https://cef8af8d-7071-4339-ac50-fc417d371010.filesusr.com/ugd/a89196_571c183c1ac848bda44f46af554298a3.pdf?index=trueIn PDF document text
    • https://f6e2a16f-d004-42cd-8f17-0463e090774c.filesusr.com/ugd/c70c35_cdbb3f33a6664f1b9e3b7949b454b79a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/rakojax.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BC 5456 bytes
SHA-256: 9994e4f768ddb50685ab920062cfbf558afdc90b708c62dd6fee6fd54483a514
font_01_sfnt_off0001042b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1042B 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off00010cb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB9 10832 bytes
SHA-256: f724023d4d0ca9776465375645c36ca64a0e98d7ec7ff258c896e0d81b22b09d

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