Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec306236e3530c15…

MALICIOUS

PDF

50.7 KB Created: 2020-08-10 02:08:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d3c54dd94d5bb2acff1967ac61e99a69 SHA-1: 48d543cc68d2b5d5511cc9e48804a0a71c6b0990 SHA-256: ec306236e3530c15cb67a89587097ab8d0fd7b6179a05e254b7d5bd821a4ae60
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting an SEO link farm or redirection abuse. The primary malicious URL identified is https://ttraff.cc/pify?keyword=cadenas+musculares+gds+pdf, which is likely used to redirect users to further malicious content. The ML classifier also 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=cadenas+musculares+gds+pdf In PDF document text
    • http://files.celebrationrotarypancakerun.com/uploads/1/3/1/4/131408204/jepaluv_lalidova_kanagul.pdfIn PDF document text
    • http://files.eliemnasrallah.com/uploads/1/3/2/6/132695734/6262606.pdfIn PDF document text
    • http://xoneridi.braddykema.com/uploads/1/3/2/8/132816036/62595201613ac.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/1/0429/9633/4753/files/makazesonodofasunexap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/basant_maheshwari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/38799539203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1974/7999/files/71468907345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7241/6931/files/calligraphy_worksheet_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7507/6258/files/tumuvapegubono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6383/5814/files/recount_addon_wow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/tecnica_para_anestesia_raquidea.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/46619066789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/51042574051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2702/7352/files/xokopenetaduwuzelaxaf.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 4

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_off0000791a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x791A 5144 bytes
SHA-256: 8f54adff6d31e9391636648b7b111d24b8c9f538e4ad2217b769a84127868f9e
font_01_sfnt_off00008a75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A75 10956 bytes
SHA-256: cba652ac8489e11bfce172148ccc79bf1e1ff20d48d7e7d59a0eab6732def17e
font_02_sfnt_off0000ae31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE31 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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