Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e31e9c94a68417c…

MALICIOUS

PDF

72.6 KB Created: 2020-11-19 19:19:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 91792ea14555cf87a5a0edbad60a2d7f SHA-1: fddaee905dcad0b73205615d46961ebfe26d01e4 SHA-256: 4e31e9c94a68417c6dfc341d4cf6be67b2c2d7a8e499cbfbd994adc8e8b9aee1
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/123?utm_term=sonic+adventure+ost+rar PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454562/normal_5fa154a0edfac.pdfIn PDF document text
    • https://fiwixenolo.weebly.com/uploads/1/3/4/4/134493020/226d899d205f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_5f9212c90fdc5.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/157c2e47-d692-408b-9f12-52db0f21e206/84680222339.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/66973240074.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/ark_desert_cloth_gloves.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/860df4cb-2731-490f-bdac-240b6b441b4b/81480266383.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/animals_and_birds_photos.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/mongoose_malus_fat_tire_bike.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5740f6e-79e4-430f-95e0-42b32c620c6a/10.1_la_proclamacion_de_la_segunda_republica.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/walapaviwubixiduvum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/777a887c-ad92-4d93-8b24-18ced893b79b/85157355833.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7AC 5064 bytes
SHA-256: edf3a4c3025220f1eb00776d91e9516d537daf703fa505e1ded7557e921d6c10
font_01_sfnt_off0000d8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8FC 11604 bytes
SHA-256: 6585079b35962efdd02e3aef98624f8490f72b1df553a1c580054549fa41fd16
font_02_sfnt_off0000ff2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF2E 16060 bytes
SHA-256: 3de5a6dad804ce95c76fee79fcc5ce97c952cd56f7a494bd99b8cc9205e91d1a

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