Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3917cb576437d2…

MALICIOUS

PDF

45.9 KB Created: 2020-11-08 09:38:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: d9720377e4bdde6b598390c9f26a0061 SHA-1: 4f725cdaa9e94935fa2d1ead0177213c16e79f17 SHA-256: 4e3917cb576437d2bf58715574a8356ed59b67d0f00182ff4b868911c2bc3ef0
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://trafffi.ru/123?keyword=pitbull+obedience+training+school PDF link annotation
    • https://xavixikani.weebly.com/uploads/1/3/4/5/134502132/zuvisejutoxobe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413983/normal_5f9742565d344.pdfIn PDF document text
    • https://favurujovonelod.weebly.com/uploads/1/3/4/4/134435517/naligoxubexi-tafavuwuje-losigumibexi-viwidajatu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420602/normal_5fa775b85a0eb.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/vusujopixolufuw_vizer_lajiguwuvijuku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xupimaral/starts_with_criteria_access.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56e0bab1-2b38-4067-bb13-288f179d7f34/54345847311.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c85a2ce-f76a-4ae6-91ce-d49f6ab1aa28/the_scrolls_of_auschwitz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bc86366-c828-4c6c-a0bf-c6fcbf61cedd/fobokizirozone.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/getting_things_done_book_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc13ce65-3c84-4d67-8c30-5ce131f57602/83318446850.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c6be5e7-a655-442a-9d01-827f408f870a/tixakesebupulomoxowago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f2fb0de-705c-4627-939c-9d64e25d3571/38050196370.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36a7fcf0-95fd-4921-81c1-c6847b376a2b/cc3d_openpilot_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8f21ec9-f9fd-4edc-9f41-a5aa1460d7cf/pathfinder_blood_of_the_coven.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_off00007244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7244 5340 bytes
SHA-256: 3e56a2d61ba6a55efa60cd9172c6461f9dc01ea604ad7130811707c69befff09
font_01_sfnt_off00008460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8460 10800 bytes
SHA-256: 646391fc4ede298774d72905f32bdfa1f6b9b7d17a7f5b41acd6050331616fb0

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