Malicious PDF — malware analysis report

Static analysis result for SHA-256 5237468c0d28b21d…

MALICIOUS

PDF

47.6 KB Created: 2020-08-31 19:09:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 434ab6ad987c103318914bc68637af74 SHA-1: cc7f0b1ac07087ba59791011a7df44b7e9fe66c0 SHA-256: 5237468c0d28b21df753c6e30689a8654dfb076a7629e58775e5ef2b95fa5450
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The primary malicious URL, https://ttraff.com/wix?keyword=azur+lane+guide, is likely intended to lure the user to a malicious site. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a link farm or redirection tactic. No scripts were extracted, limiting the analysis of direct execution capabilities.

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/wix?keyword=azur+lane+guide 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/3bca44_bb75f1570a5a4088a2c7298f878a1f86.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1b1a633001ce4af7bdc2582769e90779.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_0f6adbaeb7cd4742a24e39027182f8a7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/89363e_23a69ca2574f4da0852ec1ea9580cab9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0e2875_0d722976470c4009af5d3c2dd60ec4a2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/764aaa_a2eddce38ab04e0ca1287b52f6dc4fc4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c83fdb_d4e093e01805488a8b541e4f68688a87.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/345929_1529ef1c5e1b4768bd325ff7af1c3b49.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/5340/8407/files/zamelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4738/6262/files/alejandro_magno_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3621/1362/files/business_card_templates_psd_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/vexaxizota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1055/5034/files/kerogelidodub.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_off00007e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E30 4856 bytes
SHA-256: 8f146a9a4244d9e9cd878c0e233467e07e308b5b95bde2c38b194a1d70605b20
font_01_sfnt_off00008ec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC6 10356 bytes
SHA-256: d1e36c1875bbc84c5a111991705dade96fdee01f67e85c0011bced989100e520

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