Malicious PDF — malware analysis report

Static analysis result for SHA-256 e28097a306ce60e4…

MALICIOUS

PDF

59.9 KB Created: 2020-09-20 08:31:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee0035317d24f38461f8c905a867dcd0 SHA-1: eae305959a9401938d46158f1bb443c84b8d48e4 SHA-256: e28097a306ce60e4ef635153bd055d87981380a455b6aa79843647829ab608f6
184 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1566.002 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'civil war test answers'. The ML classifier strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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.club/wix?keyword=mr.+davis+civil+war+test+answers In PDF document text
    • http://donama.backroadsportraitcompany.com/uploads/1/3/1/3/131380344/1431072.pdfIn PDF document text
    • http://files.rafkasfareet1953-56.com/uploads/1/3/1/6/131606397/9aca1f4cf6a20.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://328c8d40-ea38-4307-ae5e-13a3d382ba9a.filesusr.com/ugd/2072cd_c47b05e3120e4d789b37bdad4b98169e.pdf?index=trueIn PDF document text
    • https://a2e7039b-d664-4ee7-82f9-ec42d6568ee6.filesusr.com/ugd/610d21_a3cb7845a3a44850b0a9d1d816aa8e55.pdf?index=trueIn PDF document text
    • https://bf2a52d8-758c-4e17-b9b0-af5f15324877.filesusr.com/ugd/d4579c_e6f532d1839d4355b481591df2f49b89.pdf?index=trueIn PDF document text
    • https://a32ccff8-8bb5-40b2-bfad-024529b6c6b8.filesusr.com/ugd/b5472a_00e2123b4d8b427283fe0c439845f4d7.pdf?index=trueIn PDF document text
    • https://a2ce27c6-261c-4dee-b367-4def41fbeede.filesusr.com/ugd/c8df25_20adde9dbc264d9ea26b157731d1efbb.pdf?index=trueIn PDF document text
    • https://ae66d90f-821f-419c-8caa-13ddf8204ce6.filesusr.com/ugd/1cc777_1f5bffac47c649538c7524aba710cb26.pdf?index=trueIn PDF document text
    • https://a5b1811d-48c1-4e17-bb84-4e17434405fc.filesusr.com/ugd/dcfb95_fa3b9928706443fd8056b7208aec6bcd.pdf?index=trueIn PDF document text
    • https://ef677e33-899a-413c-9c1a-d18d07b73569.filesusr.com/ugd/585b1d_52c00c63e14c4c059977e4dee2523263.pdf?index=trueIn PDF document text
    • https://95098b48-7415-4008-8e04-a13492320f98.filesusr.com/ugd/48bf55_01a2f1b568ac4b69a238959181156526.pdf?index=trueIn 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 2

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_off0000ad28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD28 5120 bytes
SHA-256: 1214872ccc0d191934a9a0ba0455c0546ec7b4181320b09333b45ac330fd18ef
font_01_sfnt_off0000bec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC5 10544 bytes
SHA-256: 6d81df0f06fb11347018d2e73bc5e19dc9ca8309848678c0593b6e179a56074a

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