Malicious PDF — malware analysis report

Static analysis result for SHA-256 8926af61ceebf36f…

MALICIOUS

PDF

40.3 KB Created: 2020-09-19 21:25:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2f442515380557712094318cecb3d04 SHA-1: 287472d4d62218e71f477c30506734474fd3818d SHA-256: 8926af61ceebf36f814038fc1efedca04573f39db4e0602925800f7ddb1173d8
184 Risk Score

Malware Insights

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

The PDF contains numerous links, including one identified as a malicious redirector, disguised as an instruction manual. The presence of a link farm on disposable hosting and a critical ML classification strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious sites, likely for phishing or malware delivery.

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.me/wix?keyword=graco+pack+n+play+bassinet+instruction+manual In PDF document text
    • http://kujeli.melissachuang.com/uploads/1/3/2/8/132814930/7081dd80.pdfIn PDF document text
    • http://files.christineboake.com/uploads/1/3/2/6/132695516/4489091.pdfIn PDF document text
    • http://depolom.cannotbeboardered.com/uploads/1/3/0/7/130775162/4e3056481892.pdfIn PDF document text
    • http://files.friendsofboltonlakes.org/uploads/1/3/1/3/131380005/zexovimijofan.pdfIn PDF document text
    • http://fuwuriwot.dos-beachwear.com/uploads/1/3/0/9/130969754/2ae8d.pdfIn PDF document text
    • http://jexaxibim.sammie-smith.com/uploads/1/3/1/3/131384082/3271821.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8b2cb785-b14f-4a26-b097-9ce280ec48f2.filesusr.com/ugd/cd81e9_086b886faeb54506b36629111561a913.pdf?index=trueIn PDF document text
    • https://6459846a-ea2a-45be-8c3b-4ce3e251c71d.filesusr.com/ugd/2ac701_cbad97cc703d46a88d3c42ee8033fc1a.pdf?index=trueIn PDF document text
    • https://174f2d65-b45f-4b86-830f-6282034aa907.filesusr.com/ugd/f523c3_3a20cb6f4f964690a5a767d43ab30d4a.pdf?index=trueIn PDF document text
    • https://9b2baec3-aa5e-4f19-831d-806e49cb3555.filesusr.com/ugd/7e84b7_85b45a1783fa49df8c25d9db500a64cf.pdf?index=trueIn PDF document text
    • https://d8d97daa-f939-4173-8846-6d1edcea5130.filesusr.com/ugd/bba345_00b321b3a3ce4eaaadf5f09f8c14d1c8.pdf?index=trueIn PDF document text
    • https://872666f2-5aea-4366-b63c-d565be7e3db5.filesusr.com/ugd/08338c_1afc25d4ccf54e1caa94139272466d3a.pdf?index=trueIn PDF document text
    • https://6129cf55-1500-4aa0-bba7-c920e6f02aa8.filesusr.com/ugd/ae059d_81497b2eca964d21b177b11cef5a109b.pdf?index=trueIn PDF document text
    • https://1e2ad257-23e7-40b0-9fe8-4cb411b57d0e.filesusr.com/ugd/b98abb_bf331bc9da9445be89b408e62c8ab0ac.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 4

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_off00005fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE6 5416 bytes
SHA-256: 6715354884b1e1354c895a8392afb54af9e44fbe8cf9705e8f91a58db9aa18b7
font_01_sfnt_off00007247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7247 9904 bytes
SHA-256: afe5f98ccaf48d71cc4a64c7453f9f4d36e86c2172dfcbef3d7619bc6fbb0aa0

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