Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e3a5df51eb5f44…

MALICIOUS

PDF

43.7 KB Created: 2020-09-11 07:49:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a880f306bae4318f8c41babf6b06ccfa SHA-1: ec39a917bf0ca4041d6998829379b2fdcf8410a0 SHA-256: 74e3a5df51eb5f4428f8c5f8cd35654886947760ff0b83bf5bc262b12cf4d975
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that lead to a redirector, which in turn points to a large number of PDF files hosted on various domains. The document body and heuristics indicate a lure for a 'boom beach mod apk', suggesting a phishing or scam attempt. 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.link/wix?keyword=boom+beach+mod+apk+37.+125 In PDF document text
    • http://files.williamsburgrec.com/uploads/1/3/1/0/131070938/vozawiv-delofof.pdfIn PDF document text
    • http://zetimulev.jessicaleemanton.com/uploads/1/3/1/4/131483281/zokuzo-sizito.pdfIn PDF document text
    • http://files.pierremichelsalon.com/uploads/1/3/1/4/131483184/vukorisewatakine.pdfIn PDF document text
    • http://files.carenciayoga.com/uploads/1/3/2/7/132740536/e5bb94bbd4444.pdfIn PDF document text
    • http://files.tsaposmedia.com/uploads/1/3/0/9/130969473/5516692.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/48d9a1_22146817247542af9bfd5d2d719aaa25.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1813b3_4e533ee379434fdf8e20f5e2d7cc027f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6f5f23_c670e288af7a47aabcd869ecb4302bea.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/96768c_106e37616dd748a88a796d63186a7845.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_d6daeec956dc4b1891dab3b63d0089a3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2813e2_43f960d8d1b64378a423bf5afafa3d95.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3228/9178/files/lennox_icomfort_thermostat_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/nojujugukonitujaxox.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B31 5844 bytes
SHA-256: 8cf48d0b8f9a8e9bad0d63822a4a86fd20fed6ccc45ba944ee82b0bccfbb9d33
font_01_sfnt_off00007ef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF9 10288 bytes
SHA-256: e08563b4d2b90f5616d57bc7602b26b98e5133f383fb27fb8b06120c39ea6e33

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