Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d6121f394ceeee5…

MALICIOUS

PDF

40.9 KB Created: 2020-08-07 00:57:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4572e39a1e77399ceb3ae54627f4963 SHA-1: 0661ee3ab0dc900e81e788dc52d30c0c2e1870c5 SHA-256: 2d6121f394ceeee5deaf8eeddf6bf12023813808823af0aa029f8e56bc7a1858
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=calendario+mundial+2020+pdf+imprimir', likely serves as the initial lure. The PDF also exhibits characteristics of a link farm, with numerous embedded links pointing to external PDFs, many hosted on Shopify. The ML classifier strongly supports the malicious nature of this PDF.

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=calendario+mundial+2020+pdf+imprimir In PDF document text
    • http://files.storytellerskgregory.com/uploads/1/3/2/7/132740880/1eb9173b2.pdfIn PDF document text
    • http://files.istanbulletinonline.com/uploads/1/3/0/8/130813736/sebedumitatepin.pdfIn PDF document text
    • http://files.designsbycarolann.com/uploads/1/3/0/8/130814513/ac27058e6e8.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/1/0437/7971/9317/files/toxuseduna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8225/2442/files/zugisugexagawewufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6781/0726/files/disulfiram_davis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1355/1781/files/86964739560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/baxamix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0464/9884/files/25387738612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/89628678526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/short_rest_dnd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9507/2673/files/arbitrase_internasional.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2926/4546/files/bapixatog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7187/1912/files/44187015387.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 8

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_off000060b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B5 5188 bytes
SHA-256: 4368a33263794cd1982f31eae522d94fd28e91cbbf22273122ecbcdfd5613b4b
font_01_sfnt_off0000723e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x723E 10664 bytes
SHA-256: e57f1a1b3cc60ced9940d9cf9ced18b7b1aba904a0d731834049efb52f186749

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