Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ed3575d6d0c30d1…

MALICIOUS

PDF

40.4 KB Created: 2020-08-19 20:03:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4dfc28fe19151e04636edba79b29a675 SHA-1: e3ac25bb5df5209bbd56acd7a4fc09dc20405f48 SHA-256: 5ed3575d6d0c30d1d2cb4205b1c4f59952ca357a5759175018abfa4ad3ca1f43
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. The document body and heuristics indicate a lure for free downloads, likely leading to phishing or malware. 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.com/pify?keyword=mastering+diabetes+pdf In PDF document text
    • http://ruvadixu.ellinwoodgolf.com/uploads/1/3/1/0/131069934/7272320.pdfIn PDF document text
    • http://files.mauikamaolecondorental.com/uploads/1/3/0/9/130969053/9080756022d.pdfIn PDF document text
    • http://files.krystalfood4thought.com/uploads/1/3/1/4/131438397/ea4ec10e6d.pdfIn PDF document text
    • http://rimosu.npcdb.com/uploads/1/3/1/4/131438268/1323671.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/1/0437/6874/2040/files/66805508948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0668/7394/files/vijusumenizuzaretubixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8116/3157/files/jigatixolifonavokip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/modern_calligraphy_fonts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1663/1973/files/define_annotation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/46522284771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3567/2219/files/5669467702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6696/3621/files/puvil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/golizikedakumeru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9534/1723/files/narinug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/21332360344.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_off0000617a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617A 5324 bytes
SHA-256: 646c978a2d01740dc6d9bc640e4306b72f16aee0d1836d7c4d3045164acbba10
font_01_sfnt_off00007397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7397 9772 bytes
SHA-256: 8d5b4f1f59fdec997577d89be17e096249d5c9abb1cb91c722254c1ba5056722

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