Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d7bf2cf93049c5…

MALICIOUS

PDF

37.5 KB Created: 2020-08-20 08:54:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 60bb82a0d0a1e6c60dc384cb94fec80a SHA-1: 7fdbae4081ff03a38a7d3f9a5efeab576defd0c2 SHA-256: 09d7bf2cf93049c5c5b562675d5da190e0247b35db7308447a636ff946a9cc74
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure at https://ttraff.ru/pify?keyword=lower+case+letter+r+coloring+sheet. The document body, though heavily obfuscated, also contains this URL and numerous other links to external PDFs, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier strongly indicates maliciousness.

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=lower+case+letter+r+coloring+sheet In PDF document text
    • http://modid.catherinecarterpainting.com/uploads/1/3/2/6/132681946/9798616.pdfIn PDF document text
    • http://files.personallifewellness.com/uploads/1/3/1/3/131380063/7172802.pdfIn PDF document text
    • http://files.bargeadhesive.com/uploads/1/3/0/7/130775953/b3272ac2b408.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/1/0437/5638/8510/files/tuwinuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7078/3645/files/gosonope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/84108976618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2559/6573/files/nanobexar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9100/9442/files/xawekuxexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6088/1560/files/mifemeburo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/kamoxud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6746/4085/files/92136797083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7875/files/62256579962.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 4

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_off00005485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5485 5096 bytes
SHA-256: 2f6ee4ef73d35b8e6307d6a7b3c184f6607c3973892d356a7ee4867da3fae28e
font_01_sfnt_off000065e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E2 9900 bytes
SHA-256: f61d7a79fa1f726fcedea6e03ef67b1ab94591781bd62c236b459f2025db7301

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