Malicious PDF — malware analysis report

Static analysis result for SHA-256 21036be0f6139f09…

MALICIOUS

PDF

40.2 KB Created: 2020-08-18 15:10:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5af0e1e53089e60b9bb1169ae13b4c81 SHA-1: 0dde176ce57db82841d056fa1fa1858dd1dba7aa SHA-256: 21036be0f6139f09606a862b6158a7c6a49314230175d2686b6b6e2a08170a9f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of these links, however, redirects to a known malicious infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains the same redirect URL, suggesting an attempt to trick users into visiting a malicious site under the guise of providing a template. No scripts were extracted, limiting the analysis of further malicious behavior.

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+newspaper+template+printable+pdf In PDF document text
    • http://viboduf.mathiashse.com/uploads/1/3/0/7/130776485/239939606c.pdfIn PDF document text
    • http://files.broadband4arizona.com/uploads/1/3/2/6/132695525/wivar-fozurivuzaj-sovizax-vovobabenavuz.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/1/0435/1941/0328/files/defekasuwozawodurugoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3359/9893/files/jomose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/selumolimasowasevipakof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6473/7433/files/561286352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/nojufaloxukarike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/muvovunop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6032/0663/files/63657025230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/desibiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8502/8764/files/supercalifragilisticexpialidocious_broadway.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_off00005e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9F 5532 bytes
SHA-256: 432db8f5cf75680a7c6a97f8a69084d109f8f332d237b5a7304cb76f97f79681
font_01_sfnt_off00007169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7169 10232 bytes
SHA-256: f30a0b8837a365689382e9a06a231e1a9d51b400b36f4cd42744f59237c34aee

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