Malicious PDF — malware analysis report

Static analysis result for SHA-256 76acada9d453f8c4…

MALICIOUS

PDF

41.3 KB Created: 2020-08-11 19:25:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc35f7c2f547c7b3819d5b13a739e603 SHA-1: 063bb1845e735c2cbf8e69236bccd8f43082715a SHA-256: 76acada9d453f8c4d2dbf582fa0754e6f158c9e7a0d7367da56104d20f3b9f29
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating a redirector to known malicious infrastructure. The document body and heuristics suggest a phishing lure, likely an SEO scam, attempting to trick users into downloading further malicious content. The ML classifier strongly supports the malicious verdict.

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=trastornos+alimenticios+obesidad+pdf In PDF document text
    • http://files.bathbombbootcamp.com/uploads/1/3/0/8/130874108/92c41ac.pdfIn PDF document text
    • http://files.deltasurveillance.com/uploads/1/3/0/7/130775786/8916915.pdfIn PDF document text
    • http://pipegavev.citizens-medicare.com/uploads/1/3/0/8/130814328/supomejagukip.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/1/0428/9835/8432/files/40035930655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/56040465587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2769/2695/files/21926620240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/werazapasolasosaluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9617/6795/files/13299711721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/zazelenozoxomevot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4875/4600/files/26577462818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1310/9917/files/calculus_early_transcendentals_8th_edition_solutions_manual_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6204/2529/files/21182800175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6199/1829/files/classical_guitar_arpeggio_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5932/2773/files/josededu.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 5

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_off000060af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AF 5392 bytes
SHA-256: 6ffb45d888c358d9b294e27d7a617d3955b9fce3b9fd054608519aa9f12bf6e2
font_01_sfnt_off000072e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E1 11016 bytes
SHA-256: 2c39cb5cebdf7b4d981183151e01d63eb9349ae60071511fe4ca8078c2042650

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