Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e7ce518d4460ad9…

MALICIOUS

PDF

44.4 KB Created: 2020-07-26 02:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f9bc41fddc00bd0c07da0d8a22eb6c8 SHA-1: 4400f53330c12b68844a9fa42322de3aa8d83a2a SHA-256: 4e7ce518d4460ad91902b6c908f1b07467d03b8054771565407159249c913639
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing for a 'PDF_SEO_LINK_FARM'. One of these links points to a known malicious redirector. The document body appears to be heavily obfuscated or corrupted, preventing a clear understanding of its intended lure. The primary attack pattern observed is the creation of a link farm designed to distribute traffic to potentially malicious destinations.

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.cc/pify?keyword=khao+yai+tour+guide In PDF document text
    • http://files.ntspatial.com/uploads/1/3/1/0/131070178/vevasakepojope.pdfIn PDF document text
    • http://files.minhquando.com/uploads/1/3/1/6/131606789/7610209.pdfIn PDF document text
    • http://files.andrewlcsw.com/uploads/1/3/1/3/131381542/setenefuzu-navom-kazugasawe.pdfIn PDF document text
    • http://files.relationshipsartcollection.com/uploads/1/3/1/6/131606335/149195.pdfIn PDF document text
    • http://files.westmauigreenway.org/uploads/1/3/1/4/131411542/bazimi.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/1/0431/0247/0306/files/kepipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/63638141384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1030/8766/files/54628780448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1357/0709/files/22274407956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/vupevavofozuwizenew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/zefufisewijir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6713/0534/files/1169458863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2010/7424/files/pizuxawukazep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/nugiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/99320718436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/siwixirik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/92582123349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5479/1832/files/94581853586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2746/2301/files/89852887411.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_off00007126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7126 4724 bytes
SHA-256: 435757112ab90b35ed5e43770f8ffca8a0bbb7937dff7ba6b163483f2a949abd
font_01_sfnt_off00008156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8156 10564 bytes
SHA-256: a8fc015743584e089e6d19b0dba5b14533a2d596545ec890275f83cbe564351e

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