Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9777b260388e293…

MALICIOUS

PDF

44.5 KB Created: 2020-08-09 18:50:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 27f5edc95a7894f1bce2d676e7f93b42 SHA-1: d47729eee8d66aad1ffd8eb464b28a9ba2606c1f SHA-256: a9777b260388e293906110804d9e5a24943c83f3ff9e6eb14b47a53b6f423ef9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious sites. The document body, though heavily obfuscated, contains the same URL. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify-hosted PDFs, likely for SEO manipulation to improve search engine ranking for malicious content. The ML classifier strongly indicated 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.cc/pify?keyword=blank+map+of+central+and+south+america+pdf In PDF document text
    • http://files.newmontrocksretail.com/uploads/1/3/1/0/131070561/4d88e3c.pdfIn PDF document text
    • http://files.almosteleventhebook.com/uploads/1/3/1/4/131483147/tiwavanikedef.pdfIn PDF document text
    • http://files.makeupandtanningbycassie.com/uploads/1/3/0/7/130739363/5393283.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/1/0429/9338/5633/files/83828494474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6997/1363/files/jidelaliweboru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/66723217645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0132/3421/files/68142900314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8122/7670/files/naburilazodojep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/0701/1998/files/igenetics_russell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3225/6407/files/bojejokepudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/92349225296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4242/2440/files/toleri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4383/1458/files/92603724872.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 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_off00006fdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDC 5508 bytes
SHA-256: 649f6f959d2c9380cf51c27df0529cc0fe343c4027408462c0a3e49325cd7a6a
font_01_sfnt_off00008271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8271 9984 bytes
SHA-256: 36d1d67152c8e3e87e5689a65b49b80f0826744ee34ba001fcf77e4ca47239cc

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