Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f5d29d5104580d7…

MALICIOUS

PDF

40.6 KB Created: 2020-08-07 10:20:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a5fb896980170e374258e0566bdb96b0 SHA-1: b1261a3b3c0fb8eff444b1c78db4c8b994dab6f4 SHA-256: 4f5d29d5104580d7bf4ac3729e2fed26f7ab320cd2b0e4966d481085120e7f4c
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=cantatas+de+navidad+pdf', likely leads to a malicious site. The PDF also contains a large number of embedded links to other PDFs, suggesting a link farm for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly indicate a phishing or redirection attack.

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=cantatas+de+navidad+pdf In PDF document text
    • http://files.zannagoldhawk.co.uk/uploads/1/3/1/1/131163879/63d83ff.pdfIn PDF document text
    • http://files.ajlegalaustralia.com/uploads/1/3/0/7/130740504/dapiritususuf.pdfIn PDF document text
    • http://files.alpenviro.com/uploads/1/3/1/4/131407106/fofawawo.pdfIn PDF document text
    • http://files.listentofusionn.org/uploads/1/3/2/8/132814465/bidakolipeja-nogofisox.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/1/0431/5208/1053/files/10975862255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8597/1110/files/75997507566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6789/0069/files/91980611804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/14070686058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/cpu_c_states.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0527/0427/files/74086187453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7902/5318/files/suddenly_last_summer_full_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3404/8669/files/dajimafemumadada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4340/4441/files/73119494849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0244/5475/files/ledokuzipariloxifujevoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9823/5289/files/renderitem_autocomplete_jquery.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 5

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_off00005f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2E 4872 bytes
SHA-256: a3530ad4e2d60db3a7bb91dd300b25ecdea264a0cd8f661aad6f28538cc46de1
font_01_sfnt_off00006fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDE 11088 bytes
SHA-256: c9b8e8904fc444dca1b8c28ab0b648eea5a7a8e9ed6b9fc57ebc90dd7098b7c1

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