Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eec762b3dbb483a…

MALICIOUS

PDF

54.3 KB Created: 2020-08-09 04:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 319cd2aecb49c86e38e73128acfa2292 SHA-1: 8b62aa1de083a5548f51e6cc3216a90299804f27 SHA-256: 4eec762b3dbb483ac1bf1a7c446ab31370f827584705536bf270ba17f3484206
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=clasificacion+taxonomica+de+los+seres+vivos+pdf'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains references to the redirector URL and other URLs hosted on Shopify and various unknown domains, suggesting a coordinated effort to distribute malicious content through seemingly benign PDF files.

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.ru/pify?keyword=clasificacion+taxonomica+de+los+seres+vivos+pdf In PDF document text
    • http://getenaw.hillenhomestead.com/uploads/1/3/0/7/130740522/3428634.pdfIn PDF document text
    • http://files.ocalametaldetectingclub.com/uploads/1/3/1/8/131856723/zavurapewe-jizobozulex-vivizifa.pdfIn PDF document text
    • http://files.nikschulwitzarchitect.com/uploads/1/3/1/4/131453432/xadutuk.pdfIn PDF document text
    • http://files.reainfocus.com/uploads/1/3/0/7/130775009/a17163e.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/1/0430/0469/0581/files/zutilexusikiziv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/rewisodijiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9015/7474/files/17153849223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1458/5509/files/pdf_to_dwg_converter_with_layers_free_download_full_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1080/8216/files/9555010418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17721531589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruwisosipopiwusanitilowaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2624/9885/files/22497826808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/30154173559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8487/files/joguwonug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/fafotuzog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/memew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58829080427.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 2

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_off00008cc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC0 5336 bytes
SHA-256: 53543cdd34c4e5c1b9450e0aa9293e3fdc502ac33a6c2ed2b94b62d1b5264bb8
font_01_sfnt_off00009ed2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ED2 14836 bytes
SHA-256: 0d6dc86ca511e51207c28ffeb8cdd433e1b7f4d8efe230a58e1edbd41603b1e9

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