Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4f4727aea5109e5…

MALICIOUS

PDF

39.3 KB Created: 2020-08-15 06:33:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a25f84099fe1c3a923195a45a1af8db SHA-1: d78bd702177e9a45f91cae7b06935b53a7a3b15a SHA-256: c4f4727aea5109e5efb2d127af323cabd55f0b349d622029c4dc5cab66e62223
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, pointing to ttraff.com. The document body, though heavily obfuscated, contains URLs that are part of a link farm, with the primary malicious URL being the redirector. This suggests the document is designed to trick users into clicking a link that leads to malicious infrastructure, likely for further exploitation or phishing.

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/wb?keyword=abdominal%20breathing%20exercises%20pdf In PDF document text
    • http://files.vapor-theory.com/uploads/1/3/1/6/131607158/gusimixe-kixifasiloj-pupofisunemez-zaxetibek.pdfIn PDF document text
    • http://kixod.flexypakofli.com/uploads/1/3/1/3/131380983/175171.pdfIn PDF document text
    • http://files.jiniepku.com/uploads/1/3/2/6/132696214/givapazebusiz.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/1/0431/5086/8646/files/44506639573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/tuberculous_peritonitis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/6820471032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/18704645984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0279/7986/files/wazekus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/32430368930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1388/8405/files/how_to_clear_contents_in_google_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4224/9631/files/40992745525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78299439052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0473/7174/files/fosupakopatiwuniweb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/43973938796.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 7

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_off00005ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE7 5764 bytes
SHA-256: c1b39089e7875a84386f706162405fd51f2b8c498c39078ddbc3fac6a7cc9863
font_01_sfnt_off00006e56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E56 10008 bytes
SHA-256: bafd3591ce92d0f5c593a3ca95ec3a9a764186b8f64b465ec791f9146de8fa29

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