Malicious PDF — malware analysis report

Static analysis result for SHA-256 a53698278c398324…

MALICIOUS

PDF

40.0 KB Created: 2020-11-07 09:23:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 4591a98366878062b599c17790b56fa1 SHA-1: 0c94025366228ff87517061930915f6409d395c3 SHA-256: a53698278c398324b47d3789c2ae637f8c5f24d0525527012ad8aa70207c50ef
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to external websites designed to appear as legitimate content. The primary malicious URL, 'https://trafffi.ru/123?keyword=ffxiv+masked+rose+guide', is presented as a lure for a game guide, likely to trick users into visiting a malicious site. The PDF also contains a link farm, indicating a potential SEO poisoning or redirection scheme to distribute further malicious content.

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=ffxiv+masked+rose+guide PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/gopiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7151bad-0324-4703-a894-d9f42c67748f/jamozu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8a7990d-a89d-48ee-a9e0-a0175f2d609a/mapemezinoral.pdfIn PDF document text
    • https://xanafegeze.files.wordpress.com/2020/11/99519118409.pdfIn PDF document text
    • https://pifakimep.files.wordpress.com/2020/11/fododuxuxinoni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88967742-b72e-4945-abdd-94243d60ad4f/este_de_europa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9a4e34d-6efb-4dbd-8f59-4d58faabc668/sunosuzokakazaninifupas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0eedb76-484f-414e-8c25-5284c4b2f5c8/94119041089.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f3c2469-a6c4-4ca0-b56f-cea17a234514/49962277595.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acef3eb7-ef26-4a68-94c1-68972b49b596/77572191758.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cb21a2c-08d4-4812-b5e2-a194dcb25022/57971443108.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb378634-9276-40ff-9bbf-0630972fbd3b/turbine_guide_vanes.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D40 5344 bytes
SHA-256: 3ef38efdadabd7dafd58525ef620928fca47e6459bff19fb28e1db42f6402028
font_01_sfnt_off00006f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F64 10584 bytes
SHA-256: 34345e8a60b01615d342607872623265af4b3941b8e861b109fd46f75512f507

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