Malicious PDF — malware analysis report

Static analysis result for SHA-256 24ee4fc7664fdf06…

MALICIOUS

PDF

41.6 KB Created: 2020-08-07 07:00:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 70c9c627c82c58d82fb493ee1fbc1294 SHA-1: 6d14a01dbe7bbc537e6bf62e976087a3098f0f29 SHA-256: 24ee4fc7664fdf06584e64f102ddabb7cfa7ca35a4c12022c02d2ec2161aac8b
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious URL, 'https://ttraff.com/pify?keyword=biometria+hematica+pdf+unam', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other links, suggesting an attempt to lure users to external, potentially malicious, 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.com/pify?keyword=biometria+hematica+pdf+unam In PDF document text
    • http://files.changingfutures.org.uk/uploads/1/3/1/6/131606087/mufegesitawiko-matuwomap-xivekun-vokozufeletefuz.pdfIn PDF document text
    • http://files.adrianahammond.com/uploads/1/3/1/4/131452846/1074787.pdfIn PDF document text
    • http://files.renewyourminddaily.com/uploads/1/3/1/4/131453674/7700a8b95.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/1/0434/0885/1098/files/78198828025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7296/files/getobifur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/90804462890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/gatuvakumomudat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/41036070994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6246/8516/files/74986950183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/47912894916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/33186526761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7054/6335/files/lubukinidis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7658/2550/files/urbanismo_tactico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3523/7269/files/rebifimemiravule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0324/0871/files/27140776123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1094/8254/files/riwulaletizu.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_off0000648b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648B 5236 bytes
SHA-256: fda6af594f9c52f7cac37faa395a312898a35f55fc56dad3f95d26532f6b4008
font_01_sfnt_off0000762c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762C 10404 bytes
SHA-256: 42bbf7231d9e7583e8faf1ffa5b4f67e9c3928c02ae62630ede51b9caed80e20

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