Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d53663d9a8bc940…

MALICIOUS

PDF

48.2 KB Created: 2020-09-17 06:03:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10ae3010c8293b5f7597b3c74bf8b438 SHA-1: 6d71966ec66c34fefb5c2172d6bb2a4194b3f416 SHA-256: 7d53663d9a8bc9409595204120fa97898d1ece0802ae25a7dc8aad8ad9bd8be7
184 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to suspicious or disposable domains, indicating a link farm designed to redirect users to malicious content. The presence of a known malicious redirector URL further supports this. The ML classifier also strongly flagged this PDF as malicious.

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=spillover+book+pdf In PDF document text
    • http://files.katrina-wilhelm.com/uploads/1/3/1/8/131856433/cfbf1ccf7d06a.pdfIn PDF document text
    • http://jupar.sheltercraft.org/uploads/1/3/0/8/130874370/d40cd1107.pdfIn PDF document text
    • http://files.betsyleebaileymusic.com/uploads/1/3/2/7/132740564/kimamixorofitu-mizuziximexaxe-gikagurafe-zadawo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2553/0005/files/formule_du_bicarbonate_de_sodium.pdfIn PDF document text
    • https://9bb6805f-b413-4364-9898-f7e1bb52b13f.filesusr.com/ugd/d9d1f5_dc616396b27f423e824ae013dfbb45c0.pdf?index=trueIn PDF document text
    • https://7dd48d21-ca83-40c3-93a1-d2577063a49a.filesusr.com/ugd/696117_8a6db8904cb5489aba11f4dfceea07f5.pdf?index=trueIn PDF document text
    • https://884d7d92-59ee-4437-a07f-a661e2a340d9.filesusr.com/ugd/ac8c68_02f9a8db71b34858a66849894f7b514c.pdf?index=trueIn PDF document text
    • https://82e333bf-5691-4ce0-ad3a-a7a69fba4932.filesusr.com/ugd/ea2c45_51a21c91317f4c4c9e1ca322f3e11a2a.pdf?index=trueIn PDF document text
    • https://a4a54cbb-2f5f-440d-8ffa-3ca8efdb7921.filesusr.com/ugd/74e905_83314a8684cb493da5f3de9aaa2c7efa.pdf?index=trueIn PDF document text
    • https://258e301a-a2e9-4e17-9496-8c285e353043.filesusr.com/ugd/d2759c_499cfc971e44406395c29a504b6c009f.pdf?index=trueIn PDF document text
    • https://c08d0873-075e-47f0-be16-138d9f73c2b7.filesusr.com/ugd/9ea91e_b23c67fe0c36472ba4ce79a19b94b5f0.pdf?index=trueIn PDF document text
    • https://8df680d6-6a63-4d92-b94d-515bf3c68676.filesusr.com/ugd/08338c_0b6c0ba4adbb479c856613a9c04c2aa0.pdf?index=trueIn PDF document text
    • https://aa862a48-1835-4974-9e15-67d950a265eb.filesusr.com/ugd/ab5adf_9adfff69f6594f948532f497810f0f66.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 7

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_off00008083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8083 5016 bytes
SHA-256: ef4af70b1729aa461184da02d0591dfe1b8ee18ab51505828238062111ee778f
font_01_sfnt_off000091a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91A9 10236 bytes
SHA-256: 0892cd86d6f7dda54c58e4d18bafe56a2bb2d35e367ce1722e92adb0587080f9

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