Malicious PDF — malware analysis report

Static analysis result for SHA-256 884d4f081ea238e6…

MALICIOUS

PDF

33.0 KB Created: 2020-09-22 17:07:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49a2c25ef212d8dec71b5541dc7b9ba8 SHA-1: f98af71f1ab3db6396993c60124ddadf9f22ff17 SHA-256: 884d4f081ea238e61579207975cd36d7548351f6ac59bda48a984c9fea37aa7b
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with several pointing to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains URLs that are consistent with the link farm heuristic, suggesting a lure for SEO spam 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=jvc+compulink+receiver+manual In PDF document text
    • http://files.tenayaspeaks.com/uploads/1/3/1/6/131607239/5740736.pdfIn PDF document text
    • http://files.byrobinraymond.com/uploads/1/3/1/1/131164236/90a70562.pdfIn PDF document text
    • http://files.amosiowa.org/uploads/1/3/1/4/131482881/nelinafetewesulum.pdfIn PDF document text
    • http://waxuz.una-atl.org/uploads/1/3/2/6/132683289/nekupen-jedojije-lapoxoj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ca7a183c-fdad-429b-bb00-16b45fd3ef14.filesusr.com/ugd/28b3f7_587336ad77c94889aecf1beee65faaa8.pdf?index=trueIn PDF document text
    • https://7ab0d905-4eb1-4abd-b946-6cdbdc690b98.filesusr.com/ugd/1decf9_f1f1fa0c5ea947a59f8085a689e8a830.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9688/6440/files/bivepiloxatipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/2507/9960/files/antiglobulin_test.pdfIn PDF document text
    • https://f08144f0-d115-475b-8591-65f3d7f349a1.filesusr.com/ugd/8aba0c_9c8d9d83e8fe4518a356c6efa915b55f.pdf?index=trueIn PDF document text
    • https://8222d59e-260c-459b-a8ca-d83342872bb6.filesusr.com/ugd/d7c203_1133e28bba7746078f88488c632d1379.pdf?index=trueIn PDF document text
    • https://6e7b3636-7770-4189-96c4-4c216f739f55.filesusr.com/ugd/ede58b_a55cb44ab0324377a94431c356b6e5fb.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 6

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_off0000438d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x438D 5016 bytes
SHA-256: 7392b4ec66e76cb841a2bb7291f0046e8a13ee26cbbb609587ca2d49928cddcd
font_01_sfnt_off00005490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5490 9808 bytes
SHA-256: 1fdb75bed60f3371de5a1c930bdceea8957a40e8ceeeccc85da17b09b257b77a

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