Malicious PDF — malware analysis report

Static analysis result for SHA-256 72ce865e7e28a3e2…

MALICIOUS

PDF

68.2 KB Created: 2020-08-12 09:12:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4a670318e645b36f7ea3d1781435d798 SHA-1: fe22e51929c072024b5101e8e7b4764f0e8831f8 SHA-256: 72ce865e7e28a3e251c0ff4fac0386cdcbce66de8de0bda9756109181d167c06
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is designed to appear as a collection of essays, but it contains embedded links that redirect to a malicious link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=aldous+huxley+collected+essays+pdf, which is part of a larger SEO link farm strategy. The ML classifier strongly indicated maliciousness, and the presence of multiple redirector links confirms a malicious intent to lead users to harmful content.

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=aldous+huxley+collected+essays+pdf In PDF document text
    • http://files.bencheetham.com/uploads/1/3/0/8/130814021/nukuvotinagu.pdfIn PDF document text
    • http://files.r2wnt.com/uploads/1/3/2/6/132682883/6507232.pdfIn PDF document text
    • http://befemana.extremeneedlepiercing.co.uk/uploads/1/3/1/4/131437709/wudojokekim.pdfIn PDF document text
    • http://vituviz.simonfire.com/uploads/1/3/1/4/131483281/xugeb_vetavigotij_balobizupobadi_fowawotisofetaj.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/1/0431/1616/7328/files/98144454274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4603/4853/files/11605109071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2344/0804/files/ligojodelomisagosamedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6415/5560/files/algebra_ebook_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/depelinagusazoboreturizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5201/4491/files/bhajana_patalu_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5639/7464/files/bosexijexadigelotop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4468/3419/files/honda_hrx217_shop_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3889/1419/files/wujoletafavijapobupetuxom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/3643859645.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 7

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_off0000cde8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE8 5308 bytes
SHA-256: 903e99025919be79a627afd9c5270fba9d24433ddaa64cadf248525b3f2e3c28
font_01_sfnt_off0000e004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE004 10460 bytes
SHA-256: 26686c3e01945c450d5dc653e8a0b54fdfb79cc91005d3aaab7b7719080be21b

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