Malicious PDF — malware analysis report

Static analysis result for SHA-256 896b7a21f1138ec5…

MALICIOUS

PDF

41.3 KB Created: 2020-09-19 05:22:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4541f80b9dd003b7beb41991d71692e7 SHA-1: e0f301cddc676523fd773f1c5e375e3d1baa2a1b SHA-256: 896b7a21f1138ec5786934483055e06fbf592f15bd6bee62d7ccd1a14d5dc098
184 Risk Score

Malware Insights

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

The PDF file was identified as malicious by a machine learning classifier and contains numerous embedded links. Several of these links point to redirector infrastructure and SEO link farms, suggesting a campaign to drive traffic to potentially harmful websites. The presence of embedded URLs and the nature of the heuristics strongly indicate an attempt to lure users to external 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.club/wix?keyword=rexxar+guide+hots In PDF document text
    • http://files.myspecialcrown.com/uploads/1/3/0/7/130740465/6020692.pdfIn PDF document text
    • http://zotujut.theeaglegallery.com/uploads/1/3/1/4/131437363/3b46da.pdfIn PDF document text
    • http://zebik.seedlingscorp.org/uploads/1/3/2/6/132681479/gexanenofapiza-jovopetez-sadubaral.pdfIn PDF document text
    • http://files.pearldeangarden.com/uploads/1/3/1/4/131407424/1565877.pdfIn PDF document text
    • http://files.saltyhairmamma.com/uploads/1/3/1/8/131856522/86bb5a.pdfIn PDF document text
    • http://nixap.canaryvilleriders.com/uploads/1/3/0/8/130874388/lixovemopam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://66d4f5be-eaaf-47a3-8ac0-ebe1f7b5b10f.filesusr.com/ugd/b2ba6b_f9f95fbf09ef4e6785d1ee2bd2796c71.pdf?index=trueIn PDF document text
    • https://7e7d9483-3dce-473e-91a3-fc9499291097.filesusr.com/ugd/db80c5_02946765873e42ee909aab92569edf79.pdf?index=trueIn PDF document text
    • https://7ee70f2c-0dea-4a82-8473-b962d4c32a19.filesusr.com/ugd/f91cf1_b974952999624e6a84d5f0d7cb3252de.pdf?index=trueIn PDF document text
    • https://4bf0b9d1-1159-481c-8736-2a917ee28a3a.filesusr.com/ugd/33a2e4_b6ba251fdc9649bdaa8f1d5b2eb33840.pdf?index=trueIn PDF document text
    • https://88b896bd-f7c2-4fe0-93d0-5580740e2cf1.filesusr.com/ugd/fdd6c2_c5080fba6e87414e82f4ef5a7a37f49f.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9133/6099/files/area_of_irregular_shapes_using_integration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/test_bocconi_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7378/1408/files/esc_heart_failure_guidelines_2017.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 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_off0000658c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658C 5128 bytes
SHA-256: 8062339318cab7ea7406b920644a5159ccf382249a849ea974e4746d18a11f8a
font_01_sfnt_off00007700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7700 9904 bytes
SHA-256: 77a222c2b734c4b07ede665338c8974097f661704c0543c1d7d80a7147fab882

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