Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3fe53578b6d89b1…

MALICIOUS

PDF

41.4 KB Created: 2020-09-18 00:14:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9816bfb4935c83358f0712f7a5f1e757 SHA-1: 12fd2d49bc2a74748819f1346f938a4ee500bc65 SHA-256: e3fe53578b6d89b1bc8445c27be3f56d3ed05bb4f6942c90e64a6ab2d94b0c3d
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with one prominent link leading to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, suggesting an attempt to disguise the malicious link under a seemingly educational topic. No scripts were extracted from this sample.

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=chapter+15+the+second+industrial+revolution+worksheet+answers In PDF document text
    • http://jenefodo.jpadventures.com/uploads/1/3/1/4/131406515/xoxoxojovu.pdfIn PDF document text
    • http://giwedod.laocdb.com/uploads/1/3/1/4/131482916/jagewomum.pdfIn PDF document text
    • http://muram.bodyandsoulapothecary.com/uploads/1/3/0/7/130739664/c34ed4a.pdfIn PDF document text
    • http://files.chihdesignltd.com/uploads/1/3/2/8/132814241/roxajadotimijam_wosuzokubuwunux_gubixi.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/1/0433/9531/7918/files/analisis_de_riesgo_del_trabajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7471/4784/files/jolibavaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8282/5376/files/free_cv_template_word_format.pdfIn PDF document text
    • https://a0e22bdb-14e5-4e5a-af0c-61ff9226cf6e.filesusr.com/ugd/97aff7_a720b86cd8e64406b04031e2694550be.pdf?index=trueIn PDF document text
    • https://97239b27-87cd-4ab4-911a-b84904747378.filesusr.com/ugd/4cf28d_4e99938f4d0d41a79c77d8a3470e5320.pdf?index=trueIn PDF document text
    • https://66233792-fee5-4fc4-b6da-0b0679d4d7df.filesusr.com/ugd/2e16aa_96083fde3828454cafaf38e915929a1f.pdf?index=trueIn PDF document text
    • https://4ce37f4e-c7b7-4c4a-97b2-afd8ddc0a691.filesusr.com/ugd/ca847e_9a4f03a82727454f800873fc0ea28fff.pdf?index=trueIn PDF document text
    • https://57147374-8d3c-463b-9faa-68cbef14b04b.filesusr.com/ugd/2e79a6_6e4979130c804bdf8e11a92bb35bcbc2.pdf?index=trueIn PDF document text
    • https://8142eebc-d78f-4950-94b1-0b5c8e8369f9.filesusr.com/ugd/98d33d_070e79b5e8fc4de7bb888aed8f2b75fc.pdf?index=trueIn PDF document text
    • https://dbf64e23-b4bf-4db0-938f-8b0600c21a0f.filesusr.com/ugd/3ce946_3b5dec96f90e4f15a62886b9750164a7.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_off00006337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6337 5460 bytes
SHA-256: 2820b5d1bdb91ff52966df8c65dc649a166f86d02e0f7245054d9c2771a5d8d7
font_01_sfnt_off000075d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D8 10060 bytes
SHA-256: a2647603abbb790ff25471b7be9bc7c73dbb95b2bc964b47d02dcd651797d163

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