Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d91499f18c4df5…

MALICIOUS

PDF

45.9 KB Created: 2020-10-26 23:30:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 2c261afbc34f1eae86cc6a693441150d SHA-1: 99e5d0169d7129638f0b1bbda1dde3060a0bb5e0 SHA-256: c5d91499f18c4df524d4f45b3f6688ede7d2341aaca071707e46b8d95039fdd9
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.me/123?keyword=rockwool+comfortboard+home+depot In PDF document text
    • https://voduzivet.weebly.com/uploads/1/3/1/6/131607522/dcd848.pdfIn PDF document text
    • https://duxebiforup.weebly.com/uploads/1/3/4/0/134013009/eab00.pdfIn PDF document text
    • https://guboriratuji.weebly.com/uploads/1/3/4/2/134235556/377f9.pdfIn PDF document text
    • https://vogizezadu.weebly.com/uploads/1/3/0/8/130814341/xusozav-lovalinisakix-javabife.pdfIn PDF document text
    • https://tijikazi.weebly.com/uploads/1/3/4/3/134373218/zodezowuxewojukogi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384036/normal_5f8f313bd09e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374374/normal_5f8c9ce958938.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394066/normal_5f924d1242a77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369189/normal_5f92c295c3718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370288/normal_5f88d5a334707.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375075/normal_5f971575363cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408004/normal_5f953c6494b8f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8519/6183/files/64975457928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7434/7693/files/florida_non_disclosure_agreement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/34213901343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2751/1496/files/tamipupomizuwiruxoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5018/4085/files/vamarelilidekidefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4266/7161/files/irregular_polygon_perimeter_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3136/4252/files/download_audio_editor_apps_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7739/3815/files/kifozosuvisupodixes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6201/8716/files/pink_black_and_gold_baby_shower_cake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8937/2329/files/jujuronalakekopepit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9464/7719/files/nezosuxitu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE7 5520 bytes
SHA-256: ff9d0be35ede42330362bd05283a0c004b8e27ba73862583c86aa3d25f3fd037
font_01_sfnt_off00008190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8190 12268 bytes
SHA-256: 8a5a07611737c3060a6cde7a4cf5b7d15621f540bf83adb69b02cbc35d6916dc

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