Malicious PDF — malware analysis report

Static analysis result for SHA-256 33fb5a6032aaaa3a…

MALICIOUS

PDF

48.4 KB Created: 2020-08-31 09:40:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47522ce714dec6d4d568c06337537d74 SHA-1: d743ce31422169479078df2407d8cb6c8f887c23 SHA-256: 33fb5a6032aaaa3aea3cbf5709e1e132f028ae47e0d4132412a57ef721120493
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious URL, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains text related to 'Clay soldiers mod' and a URL that appears to be part of an SEO link farm, suggesting a phishing or malware distribution lure. The ML classifier also strongly indicated maliciousness.

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/wix?keyword=clay+soldiers+mod+1.+6.+4 In 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/8127dd_946cef3ff5b1493e927a89c33c4d2bd2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1f2646_13470d43d4d642ef83a89bb55a26a245.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_e43635ec5705449cb025bf6588570ddf.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_765b813be39641e098dfb3974e2d5643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7039/8357/files/58639940741.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e8506d_d44bb210c1e94f35ae340ea69ad4cb0b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_ef1531130b8740b3b675943f0c4e103c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5ecadc_620e3656bae5432c8612ce922bf91260.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e1c37d_cb8558f6f6194634a7cafe6abdc6517d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_49de9b72dd4b4994967c082c2c7f984e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/67e251_94ba11a2cec4452f803039fb9168b30b.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_off000068eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68EB 5304 bytes
SHA-256: 252c6047235f3f10d962ab132018725b545bbdf041e7b58acaab12d4a44cb4dd
font_01_sfnt_off00007af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF2 10360 bytes
SHA-256: b18151230b051f307a30ba7e703c07f3ab83a63cc23f985ae51d071e58e06111
font_02_sfnt_off00009e89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E89 16064 bytes
SHA-256: 6f41d85279102efce3c4bd26fddb767baf9b68a4f55e239fba9bedc2a2d3b953

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