Malicious PDF — malware analysis report

Static analysis result for SHA-256 15f280ee8e6bc6fa…

MALICIOUS

PDF

48.2 KB Created: 2020-08-04 06:12:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7509d42322afbf19ccf9d9247753a87 SHA-1: c2374b8ad7665466c76a569cf9ac94d4ec0a04a1 SHA-256: 15f280ee8e6bc6fa8279acd3d604b1123b5bc82298c9f05ce150096706b5a988
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.cc) and then to various PDF files hosted on Shopify and other domains. This indicates a link farm or phishing lure designed to drive traffic to potentially malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is used for malicious redirection.

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=obras+de+jorge+basadre+pdf In PDF document text
    • http://files.teastowels.com/uploads/1/3/0/7/130776338/63289.pdfIn PDF document text
    • http://files.karleekilker.com/uploads/1/3/0/7/130775746/zewoka-bosovolafu-sugusa.pdfIn PDF document text
    • http://files.wildflowerphotograph.com.au/uploads/1/3/2/6/132695339/lezewu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6341/9814/files/giduzop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/lesezuzodilojek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0766/2504/files/adverbs_phrases_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6316/4580/files/libro_a_travs_de_la_biblia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1292/2264/files/namozoxexusine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4288/0160/files/nekepowarudejozogejor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7034/0772/files/jiwakedibumafebijeru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4349/4815/files/6080398483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7147/9709/files/63890166566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/807255133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2172/9955/files/57280443808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0686/0187/files/90501424584.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000707e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x707E 4976 bytes
SHA-256: 62385f885516ccbb4ccb9b928a3ba233b05fff17e2cd87ab285ba51d877500d1
font_01_sfnt_off00008178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8178 10664 bytes
SHA-256: 33de7dec14fcd5d1ecdf5ce6c4cd5c2fc706f74c005682dc9a5ef55a829fa9a2
font_02_sfnt_off0000a46c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA46C 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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