Malicious PDF — malware analysis report

Static analysis result for SHA-256 67013f23ed1c58f8…

MALICIOUS

PDF

43.0 KB Created: 2020-08-10 05:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95f88608b45e4d78f66236ffee612829 SHA-1: 9bfa677c3deed9eb67589216eb60dd15f97d2799 SHA-256: 67013f23ed1c58f8bd7f500ddbf82a20de10b576c444814deb38fed77cff9947
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body and embedded links suggest a lure for free downloads, likely a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the presence of multiple SEO-optimized links points to a link farm strategy to distribute malicious 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.ru/pify?keyword=acta+constitutiva+de+una+empresa+completa+pdf In PDF document text
    • http://saluguz.christinepr.co.uk/uploads/1/3/0/8/130874493/wimimusevizi.pdfIn PDF document text
    • http://files.karamarie.org/uploads/1/3/2/8/132815084/9297620.pdfIn PDF document text
    • http://larogug.kristintippingillustration.com/uploads/1/3/0/8/130815026/zijuralitewakoba.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/1/0431/6397/5835/files/52217913123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7263/4536/files/gobipelazivowubatetag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4986/8712/files/bhagavad_gita_in_malayalam_with_meaning_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6000/1957/files/create_a_branch_in_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6690/9081/files/bunati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/12014805668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/96561299975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sazofafusogowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2440/8991/files/28167730351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8039/1585/files/sunixurakupigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sopituwoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/68651610314.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 2

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_off0000660c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x660C 5352 bytes
SHA-256: c942fefd2646faa683293817409ec946045256f7f466426e2da541d93d6482ed
font_01_sfnt_off00007831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7831 11416 bytes
SHA-256: 5693e611b1b944b51d131035365f2722d2ed032e09693a55bbd8c50287b0051b

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