Malicious PDF — malware analysis report

Static analysis result for SHA-256 4761268007c5d3d4…

MALICIOUS

PDF

59.0 KB Created: 2020-08-15 07:39:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 11f18ebc65e90f0c8bca8ff0e91d5261 SHA-1: fa3949ff5d5a443878b6e3b5da87833656e46bd6 SHA-256: 4761268007c5d3d45bfbf70a13b684e0071d8a38bc0ad0b9ef0ac31eed73954a
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, contains text suggesting urgency, which aligns with the 'SE_URGENCY_LURE' heuristic. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.cc/pify?keyword=heart+failure+preserved+ejection+fraction+treatment+guidelines In PDF document text
    • http://kuxikib.horsedream.ca/uploads/1/3/1/6/131636648/vevixejokukazos_jikumufibulu.pdfIn PDF document text
    • http://files.petermaxwellslattery.com/uploads/1/3/1/1/131164079/859521.pdfIn PDF document text
    • http://files.everydaythread.com/uploads/1/3/1/8/131872273/60724.pdfIn PDF document text
    • http://files.finnmurder.com/uploads/1/3/0/7/130739648/4717692.pdfIn PDF document text
    • http://files.empstudio.nl/uploads/1/3/1/3/131398177/9692425.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/1/0432/4904/1563/files/7999231522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9208/0792/files/37677848886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2158/3004/files/23210382173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9482/6405/files/nuvipirox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0842/6147/files/34503427201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1891/9837/files/be_kind_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8311/1323/files/63226468253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26433336276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/memezusisiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/bamakikuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6737/5777/files/85956429151.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_off0000a82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA82C 5572 bytes
SHA-256: 3caa28049a4d5bea7466ae1e8649bab0ea7b810ce19d36a99a8fb9f0eacf69a1
font_01_sfnt_off0000bb0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB0C 10440 bytes
SHA-256: fb663f0223cc69ecb8ece89244069e9f4d565519191c6705fed8c82a8f1963d7

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