Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9447262d2c8d476…

MALICIOUS

PDF

39.5 KB Created: 2020-09-17 04:39:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6dfafbba08a29c2d04883c205051d09 SHA-1: 63ec2e647c7286d2f07d2ec8a33b21dc2c4fd288 SHA-256: e9447262d2c8d4765985b010bd800a3dce7e33b71f7f84725ec68ec665e85407
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. One prominent link, https://ttraff.link/wix?keyword=triangle+missing+angle+algebra+worksheet, is flagged as a malicious redirector. The ML_NYX_PDF_MALICIOUS classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains text suggesting it is an 'algebra worksheet', which is likely a lure to encourage clicks on the malicious links.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=triangle+missing+angle+algebra+worksheet In PDF document text
    • http://renodip.chicagolandboxers.com/uploads/1/3/0/9/130969060/c705bcb4c7ef83.pdfIn PDF document text
    • http://bewada.vhw4ulaughmore.com/uploads/1/3/1/3/131384013/462e5.pdfIn PDF document text
    • http://files.leathercreationsbyrenee.com/uploads/1/3/2/7/132741225/sirexorifokib.pdfIn PDF document text
    • http://gutap.sagegraphicdesign.com/uploads/1/3/2/7/132740482/lojego.pdfIn PDF document text
    • http://files.ashwoodcarpentryjoinery.co.uk/uploads/1/3/1/4/131437655/8933787.pdfIn PDF document text
    • http://files.elginartsassociation.com/uploads/1/3/1/3/131384070/9bd86dfbd406.pdfIn PDF document text
    • http://files.brandonmoorecomposition.com/uploads/1/3/1/4/131438766/muxigem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://df657cbd-befa-46d6-8bd5-dbc9681a2f82.filesusr.com/ugd/61b8bf_09704a7ae72c4989b7024b15e51fd0e6.pdf?index=trueIn PDF document text
    • https://e13cfed0-ccdd-4810-a1b2-4ec08a8e0ee5.filesusr.com/ugd/1c8c1e_008b3917c0e14beeaf7e64048a978023.pdf?index=trueIn PDF document text
    • https://6e5e5c27-170d-46d9-b2bf-19d14dc436e0.filesusr.com/ugd/3d0627_05acd3d37ab14c1cb52bf9449a296545.pdf?index=trueIn PDF document text
    • https://649d0d25-67b1-47a6-98fc-91eb52c72ddf.filesusr.com/ugd/0511f5_6ea4ebda11094f1a89d3525371dacee4.pdf?index=trueIn PDF document text
    • https://5fd2f68f-953e-4b49-9f5c-1ba2bf29e37e.filesusr.com/ugd/008e52_b2eefab22803460089be4667f936ffb7.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5362/8062/files/xubasolukag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/0142/2497/files/the_little_seagull_handbook_with_exe.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_off00005ceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEB 5344 bytes
SHA-256: d9bb8f5008b28ccebe341176b84f2f8f478d34d5cc34e694c689a3866f0ca11e
font_01_sfnt_off00006efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFE 10072 bytes
SHA-256: 365993b43db562cc93e3c933106024d24d651452c31d071287cba9c72ad9d332

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