Malicious PDF — malware analysis report

Static analysis result for SHA-256 3906a4ffa0dedcb0…

MALICIOUS

PDF

42.6 KB Created: 2020-09-17 15:13:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f2e4c91a5154c3b34c1ebfe3d72fb47 SHA-1: 2d1eeba4c999c5fdc17c6fd88f9d08680ffec1b2 SHA-256: 3906a4ffa0dedcb0f25dc1a45afa5804f4f59121572f7f1d196040be3a415feb
184 Risk Score

Malware Insights

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

This PDF document contains a malicious redirector link disguised as a game download, aiming to lure users to harmful websites. The document body and heuristics confirm the presence of multiple links, with one specifically identified as a malicious redirector. The PDF also functions as a link farm, pointing to numerous other PDF files, likely for SEO manipulation or to host further malicious content.

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=unblocked+miniclip+games In PDF document text
    • http://sosikodav.appwesley.org/uploads/1/3/2/7/132740837/wufamalopu.pdfIn PDF document text
    • http://lesumo.mydrycleaningguy.com/uploads/1/3/0/8/130814526/3772006.pdfIn PDF document text
    • http://files.enkindlingwords.com/uploads/1/3/0/9/130969211/987441.pdfIn PDF document text
    • http://pufodez.computerclubrhcc.com/uploads/1/3/2/7/132740214/xitorigupidozuzanuj.pdfIn PDF document text
    • http://files.linhallen.com/uploads/1/3/0/7/130740112/lepaligew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c0895de3-6cd1-4bf2-b89b-575cdc87529b.filesusr.com/ugd/bb05c1_bf0a24cde188491493849b236b706269.pdf?index=trueIn PDF document text
    • https://697fa4a0-403a-4ae0-a0cd-730a61f3d9f9.filesusr.com/ugd/12dc78_63a096a8093b4a2bb132a04bc70855c1.pdf?index=trueIn PDF document text
    • https://dc0e2eb4-dd3d-4686-906f-3dfc95e4bf82.filesusr.com/ugd/6e3131_0b4a59f45caf4158a0bf3f0d3f7edca3.pdf?index=trueIn PDF document text
    • https://07946163-078f-43fc-bee7-d7204b64152a.filesusr.com/ugd/0cd3a8_7d7236f184e24c8990061ecf0bbde7cd.pdf?index=trueIn PDF document text
    • https://d6a58d65-39fd-4d9c-bf62-0f7f635b9db5.filesusr.com/ugd/f84671_cc9a3a399e43459b82905649991b72ef.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4007/2092/files/84932652417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2715/2539/files/art_history_portable_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5997/9174/files/64440715316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2823/3887/files/30357798393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0324/7781/files/70620014478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/capitalization_and_punctuation_worksheets_2nd_grade.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FD 5492 bytes
SHA-256: ea835bf5b4b4348207ffeef117788bb76f22b6916f380a1244d57511ef9bf7f8
font_01_sfnt_off00007995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7995 10580 bytes
SHA-256: 7eeae9fef1c4f3bacabbc3d26c2d61f59a89145a6d53b52ae8e04dcf62e87c59

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