Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cb27c9807f5e820…

MALICIOUS

PDF

40.5 KB Created: 2020-08-28 09:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eb6fa57119dafcef944c994d7c34d050 SHA-1: 2635b7c3bcb888151c1ea77ec4e62e720423d852 SHA-256: 4cb27c9807f5e820147e2c039275be59f52a53167bd1eea0ef88deb07875913f
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to `ttraff.com`. This domain is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same redirector URL and appears to be part of an SEO poisoning or link farm tactic. 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=brad+pitt+house+new+orleans+address In PDF document text
    • http://files.manfromcoxsriver.com/uploads/1/3/0/7/130739311/pupogex_wegajitor_xivavakowiwugim.pdfIn PDF document text
    • http://files.flexbar.net/uploads/1/3/1/1/131163858/sasoligade-motaloguxagodos-bolix.pdfIn PDF document text
    • http://files.stgeorgeseniorsoftball.com/uploads/1/3/1/4/131438580/e0bcd1fdd24c63a.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/1/0429/4865/7311/files/fabowitowaleme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4233/2057/files/adolphe_ferriere_biografia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4369/2445/files/40629864721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dekafarisajanitid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7451/8178/files/kidowedozav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2242/9858/files/civ_vi_steam_guides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9432/7975/files/23700176008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9629/1994/files/fuvavogabuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2496/6044/files/burrows_casebook_on_contract_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5494/6721/files/xufuda.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 1

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_off00005f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F63 5188 bytes
SHA-256: 480b40358d841780bcc44e4636840184666866317187502d3881062985ecb658
font_01_sfnt_off00007113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7113 10704 bytes
SHA-256: 05da1c93b63de7d0b448c692cb925f1ce7a7532d01b7ab2827fdbc078ef1c578

Open this report in the interactive analyzer, or submit your own file for analysis.