Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d4dce022d9e9c83…

MALICIOUS

PDF

44.1 KB Created: 2020-08-12 01:36:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 312df166aae00c1aca20de11354908f9 SHA-1: 650a64c1a36bd38acb185cc2a8016e094ebfc2eb SHA-256: 0d4dce022d9e9c83d22d402d85ee93fb3a19de91d87ba489ec7212c03af03051
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links designed to create a link farm for SEO purposes, with a primary malicious redirector. The document body, though obfuscated, contains a URL that points to a known malicious redirector infrastructure, likely intended to lead users to a phishing or malware download site. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=baudelaire+poemas+en+prosa+pdf In PDF document text
    • http://files.saratoga-bagels.com/uploads/1/3/1/4/131411147/lifipasebura.pdfIn PDF document text
    • http://files.thefashionanalyst.com/uploads/1/3/1/3/131383624/wezunawe.pdfIn PDF document text
    • http://files.shupesontheboardwalk.com/uploads/1/3/1/0/131070336/9541131.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/1/0433/0687/7080/files/41326774972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4730/2806/files/22120041235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2155/7150/files/84987930678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/72118397288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1625/5650/files/kekuwadupewirejidon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9947/0486/files/dodge_caravan_dvd_player_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1498/7682/files/sifin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5012/3943/files/73081141760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/fapafubilofogebaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6874/4099/files/49333406292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3866/2053/files/29982565166.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_off00006e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E36 5236 bytes
SHA-256: ec80eb052c8c2bac095106b899627e8b1e03d142359044d6f0ff4c091fc64cba
font_01_sfnt_off00007fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE4 11032 bytes
SHA-256: 371e78c7761fc6c4d4b5eb90987123895a6dea6c6c544d31e56f013308965145

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