Malicious PDF — malware analysis report

Static analysis result for SHA-256 d66a3b38039ef7ac…

MALICIOUS

PDF

45.7 KB Created: 2020-07-24 21:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32d8010bca79d42963b3de576a40dc60 SHA-1: 06343cbd823d6ed6958d9db17a10a0bec028c09e SHA-256: d66a3b38039ef7acd5984f8b5dab251458c09a10609c0fe8ce6ffb3173974ecd
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector infrastructure (ttraff.cc). Another heuristic flagged a PDF link farm, indicating a potential SEO poisoning or redirection tactic. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, and the document body was heavily obfuscated.

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=chloroformic+acid+methyl+ester In PDF document text
    • http://files.miltonmurray.org/uploads/1/3/1/6/131606644/nelemilor.pdfIn PDF document text
    • http://files.newbethelbaptistga.com/uploads/1/3/0/9/130969990/6423343.pdfIn PDF document text
    • http://files.kimberlysfarmflowers.com/uploads/1/3/0/9/130969703/4027302.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/1/0429/8981/3909/files/70305964866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/40258147350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6811/9445/files/rejomixedariken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3772/6622/files/tuvozanokov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/74512372450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/titigabibuzumazavuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3759/7607/files/6737133477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3866/2053/files/kuvorubopinutevul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/joliler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7228/9944/files/32737583155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/93096767827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/48074431285.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00005d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2F 5068 bytes
SHA-256: 5e46f47e3a116051831ae75903222f7a7b0bac3d7ab76dc8db59c313c83c8980
font_01_sfnt_off00006e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E72 11104 bytes
SHA-256: 342536abd3e9cb8804f5d891a6b84417ff7a24dc76b395962ecd95cddaa34532
font_02_sfnt_off00009489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9489 16080 bytes
SHA-256: 3d50f22d3ae6d9a4461c814f81554cc573a3512c555c2f223aedeeaca19cd658

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