Malicious PDF — malware analysis report

Static analysis result for SHA-256 65573466a6bcbc06…

MALICIOUS

PDF

51.3 KB Created: 2020-09-10 01:27:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6400610b4284b3ea4c3a1ce4317647b1 SHA-1: a7ff50ab4040650f6e137f825e20012e51aac754 SHA-256: 65573466a6bcbc06360dffce8dea0e1b5ea025b2d415987ccd797cdf34ef8846
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one that redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'farming guide'. The presence of numerous external PDF links suggests an attempt to distribute further malicious content or engage in SEO manipulation for phishing purposes.

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.club/wix?keyword=fgo+ccc+event+farming+guide In PDF document text
    • http://nawobogov.harvestandplate.com/uploads/1/3/1/6/131637014/827321.pdfIn PDF document text
    • http://wepif.davidsclassicalcds.com/uploads/1/3/2/6/132681865/paxuvazili.pdfIn PDF document text
    • http://files.clcem.net/uploads/1/3/0/7/130776655/8414fa242.pdfIn PDF document text
    • http://jenolife.mandokidslearning.com/uploads/1/3/1/6/131607062/jojerasiwefaris.pdfIn PDF document text
    • http://buwaxun.liquidnitrogenphoto.com/uploads/1/3/2/7/132712336/3e6f135d76c7cd.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/0e9fc2_8c4bbb7abab9463699485cf673775bdc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/529385_0a4c030385b84ec98ebc25afd9191a24.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/18f527_3d2d4a13f37247b3b3609c0c113e64a1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/18f527_06dffb5fa7324bb9b359f4b67e7dfb12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3892/4960/files/fafsa_signature_page_2017-_18.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0006/9285/files/sqlite_insert_android_studio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2878/1973/files/fuvedubowozadupuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3910/4929/files/gutujojuguti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dijovosulodomozov.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 8

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_off00008ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE2 5148 bytes
SHA-256: 0157026b1e18426e566cfd3356407841d4533af9acbf5cf0f41590f4d62549a6
font_01_sfnt_off00009c61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C61 10588 bytes
SHA-256: 8ab140de581894859141587e296b7260dcdaaf965343850b048b8c8ae7b84004

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