Malicious PDF — malware analysis report

Static analysis result for SHA-256 31f7413be1dd3a6d…

MALICIOUS

PDF

47.0 KB Created: 2020-07-31 18:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c5c656030d568e8a9b597985548aa4f SHA-1: 6047a2bf0962db65d0afff13eef5866e6db34df2 SHA-256: 31f7413be1dd3a6d54a7f5eef9d570efe551f23d67c04ed59a4071531fe2e83b
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 one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a link farm or SEO manipulation tactic. The primary malicious IOC is the redirector URL 'https://ttraff.cc/pify?keyword=how+far+away+can+villagers+detect+beds', which likely leads to further malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=how+far+away+can+villagers+detect+beds In PDF document text
    • http://files.allthingsdunham.com/uploads/1/3/0/7/130739340/402b10a.pdfIn PDF document text
    • http://files.sfchoirs.org/uploads/1/3/2/6/132695639/51660b245.pdfIn PDF document text
    • http://files.neonearthdesign.com/uploads/1/3/0/7/130776855/4472fcaaa0.pdfIn PDF document text
    • http://files.koala-corp.com/uploads/1/3/1/4/131408353/3315049.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/1/0428/5346/6271/files/83015378291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/72284899027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4091/3061/files/1313473163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1239/9009/files/botepujabana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9359/0177/files/24204429242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/pukijomizeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7243/7913/files/vojeporekigebad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8494/7357/files/navajenupizopavaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/surorut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/latirufigitifazibizewama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/demujujejewudivivisop.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
🗂 Part of campaign: lucreciadesignsllc.com 3 samples

Related samples 6

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_off000078b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B6 5544 bytes
SHA-256: c406db9a6876bcf8b823f9468c6f89c10f206c98271d01fe1ae4d8d36f3a2258
font_01_sfnt_off00008bc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC0 10392 bytes
SHA-256: 331f1f1f67cca07be17d417655aedca440c427db9e4250856427b276e3475065

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