Malicious PDF — malware analysis report

Static analysis result for SHA-256 d384ec4ce6a1e2ee…

MALICIOUS

PDF

45.3 KB Created: 2020-08-19 04:55:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c570ab85baaca60ecd2e89b50522131b SHA-1: 46f1f3de8945f6e7e5c31e5117b26f09511a3a72 SHA-256: d384ec4ce6a1e2ee10f228d68d2de2a263614f54163108168c4bb08d1521e8c5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a link farm, suggesting an attempt to manipulate search engine results or distribute malicious content through numerous external links. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves redirecting users to potentially harmful sites.

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=dimensional+data+modeling+interview+questions+and+answers In PDF document text
    • http://files.frankhagancontracting.com/uploads/1/3/2/6/132681404/zatamutofineve.pdfIn PDF document text
    • http://jewefi.stemtech241.com/uploads/1/3/2/6/132682076/jafaso-kajago.pdfIn PDF document text
    • http://files.teecardaci.com/uploads/1/3/2/7/132740285/2444469.pdfIn PDF document text
    • http://dapesob.treenailsoakproducts.com/uploads/1/3/1/4/131438316/4242942.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/1/0431/0961/3725/files/55807398822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/62034118798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1334/9273/files/62071027054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5547/1002/files/gubesakus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4396/1504/files/neumonia_adultos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4419/9829/files/doripafimorakagekis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9827/0885/files/mla_cite_government.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8126/0438/files/domaine_de_dfinition_d_une_fonction_racine.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_off0000738c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x738C 5424 bytes
SHA-256: 7861d038c1cf8743ea0580847c61391f13184d4d1a2d66a75b988d447db84f94
font_01_sfnt_off000085e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E6 10048 bytes
SHA-256: 3e8c296ec6c4a2ef71b2a897b2998af8e45e23a147565f8436ed129afd7ff676

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