Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a8b336c5fa1e553…

MALICIOUS

PDF

34.8 KB Created: 2020-09-17 00:07:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93ff78d040d1564637a3b9c8d776f510 SHA-1: 07feb1ffc169975dbc36e230fdc11fdad8f6e926 SHA-256: 5a8b336c5fa1e55381530f4ad753f67131ef5e918c375928703efda6de4a9b8e
184 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same redirect URL. The ML classifier also strongly indicated maliciousness. The PDF appears to be a link farm designed to distribute traffic to various potentially malicious or low-reputation sites.

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=bowflex+treadclimber+tc5000+service+manual In PDF document text
    • http://fisiti.rzecoseal.net/uploads/1/3/0/7/130776225/zabenirutixukiw_butiwiposolato.pdfIn PDF document text
    • http://files.jeanfahmy.com/uploads/1/3/1/4/131407767/xulodotal-mezado-zazupifojo-sogutunujax.pdfIn PDF document text
    • http://files.preptheday.com/uploads/1/3/0/7/130775429/taxawu.pdfIn PDF document text
    • http://rorira.pezzlawncare.com/uploads/1/3/0/9/130969644/sijineza_jakabebe.pdfIn PDF document text
    • http://supefuvab.phillipsandphillipsmusic.com/uploads/1/3/0/8/130813694/jexufasawumakevatane.pdfIn PDF document text
    • http://popuxiwi.portagewarriorfb.com/uploads/1/3/1/6/131636664/5823362.pdfIn PDF document text
    • http://files.mattandmaries.com/uploads/1/3/0/7/130775503/sovukinewilulof.pdfIn PDF document text
    • http://files.caseyscurbside.com/uploads/1/3/0/9/130969656/kotow_vebowul_pifojuruvefile_valeme.pdfIn PDF document text
    • http://files.adamhager.com/uploads/1/3/0/7/130740524/19bdbcc11b.pdfIn PDF document text
    • http://bigedaji.dandimicco.com/uploads/1/3/1/4/131453541/2575428.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/1/0428/6958/8124/files/22892397609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4306/0901/files/building_construction_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0413/9416/files/brawl_stars_apk_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/1925/0082/files/legend_of_zelda_second_quest_level_8_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9543/3117/files/gazetinigadux.pdfIn PDF document text
    • https://22d377cc-1d24-4d66-b1bb-dc4131c56364.filesusr.com/ugd/c12414_73accb0eb427433d84112c5946df7fb4.pdf?index=trueIn PDF document text
    • https://5abf8ccd-784c-4a49-a8fc-ce1d3a940ffd.filesusr.com/ugd/89441e_c0fc6b9291b44fdd95e709d604fa73f7.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 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_off000047d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47D9 5844 bytes
SHA-256: fed795d9e282281a62ad6b2aebe8ba7bc71becbb374eb784c6d1237cd82c7249
font_01_sfnt_off00005bc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC4 10024 bytes
SHA-256: 3a71bbf49e68739306d6e11b98a0328d74a7e1fe4b243e1a73632078bb532f42

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