Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a74929eeebcdbd…

MALICIOUS

PDF

58.0 KB Created: 2020-08-13 15:09:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a93d0d6b3c1e9bc1d6f45877010e3c1c SHA-1: ebf13b161f1d15d14d2fa11bd9bfefb19fc20642 SHA-256: a9a74929eeebcdbdb3debdfe7bf132dd75892daab0e752cb2d26100d8650822e
194 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by an ML classifier and contains a high number of embedded links. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.cc/pify?keyword=libros+de+benedicto+xvi+pdf+gratis. Another critical heuristic noted a PDF link farm, with many links pointing to external PDF files hosted on domains like cdn.shopify.com. The document body contains garbled text but includes the same malicious URL, suggesting a lure or redirection attempt.

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=libros+de+benedicto+xvi+pdf+gratis In PDF document text
    • http://files.leonoressuite.com/uploads/1/3/0/8/130814605/f2850a.pdfIn PDF document text
    • http://files.melansonmotors.com/uploads/1/3/1/1/131164236/1428578.pdfIn PDF document text
    • http://files.carolinefreudenthal.com/uploads/1/3/1/8/131871621/numufojoxu-sotorimazipa.pdfIn PDF document text
    • http://rifera.rittenhousementalhealth.com/uploads/1/3/2/8/132814170/sosofumatewekivi.pdfIn PDF document text
    • http://files.preparednesspeace.com/uploads/1/3/1/4/131455832/nenatuto.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/1/0432/8803/5486/files/school_of_alexandria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/60858075912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7162/2559/files/self_certify_sickness.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7310/9152/files/bhagwat_geeta_yatharoop_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9906/0376/files/65821659397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3431/8760/files/47179918840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3056/9382/files/zagiwed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/22518042397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4853/3144/files/jimojajadifalusedisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0101/1614/files/65929808338.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_off00009f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F49 5500 bytes
SHA-256: c4bd5eeec1eb2755f026b479cb3f39902248289a9329c81e56f4afed81151d1c
font_01_sfnt_off0000b20d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB20D 12748 bytes
SHA-256: b2e8350e53bbea4b4a7bd560d7e99b94ad3492edb066527b97b1859a95693784

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