Malicious PDF — malware analysis report

Static analysis result for SHA-256 88ae3cb273429106…

MALICIOUS

PDF

43.0 KB Created: 2020-09-18 04:38:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80e10c07326bb46efdc71842f8c375f5 SHA-1: 6af124905aa94cacab6d562d65dab22f8f2e4e2b SHA-256: 88ae3cb2734291066b1ea0da25beff16e44d64811d013dc7e5fca25b0b125d45
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded links, many pointing to disposable hosting, and at least one URL is associated with known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. This suggests the document is designed to lure users to external sites, potentially for further exploitation or phishing.

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=sao+alicization+all+characters In PDF document text
    • http://files.thecryptocorp.com/uploads/1/3/1/4/131453602/2674d2f97a20.pdfIn PDF document text
    • http://niwoseto.meghanfoleyyoga.com/uploads/1/3/1/3/131383314/03107.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7c0628ef-b2cb-4d26-b160-4559d06cbf82.filesusr.com/ugd/314c35_3a4af8027cb241828922ac4dc26b7d19.pdf?index=trueIn PDF document text
    • https://69ee42ca-e951-4557-aeb7-2ab7d981b992.filesusr.com/ugd/314c35_0c52c1e33f17454aa9e6b61e4b04ae2b.pdf?index=trueIn PDF document text
    • https://92bedd3f-f337-4f39-b8f0-da73c35c3560.filesusr.com/ugd/685707_a5bd883de2774d77993f44dffe7ae83d.pdf?index=trueIn PDF document text
    • https://3a762750-44c0-4069-b2c3-c37b80635f3a.filesusr.com/ugd/592671_de34a028c2e74448adbecc9895799834.pdf?index=trueIn PDF document text
    • https://7ad01640-8e77-4264-bd29-e3ea52c3b7b0.filesusr.com/ugd/e2c223_a24f64269aed4bff8c01410b0cc07cad.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1841/9349/files/taxogusatefitademi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3940/7784/files/aker_bp_annual_report_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5388/3293/files/26369249227.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 3

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_off00005a55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A55 4444 bytes
SHA-256: 4a49bba7df462578d3d46660d617a1751fc31e110d540bc1439a5f2ae26f9665
font_01_sfnt_off000069ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69EA 5040 bytes
SHA-256: 2cd962809d11904d557b8b7e73c2b828ccef23057d652d9bf3d9761afa170faa
font_02_sfnt_off00007b07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B07 10636 bytes
SHA-256: cd33d98f04883d611b89818c318958de302884d74738aa57faba074dbc76e4bb

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