Malicious PDF — malware analysis report

Static analysis result for SHA-256 87a5384a827b9cfb…

MALICIOUS

PDF

33.6 KB Created: 2020-09-16 21:34:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0400ce1ff399c04c56d161ac2f79fba6 SHA-1: 9145088e9aa70818e615eda66d766032680b461e SHA-256: 87a5384a827b9cfbb23dbfc47cd556b1bcdab7f1527754ae60d8a4ef41defc55
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, with a critical heuristic identifying it as a malicious redirector link farm. The primary URL, 'https://ttraff.me/pify?keyword=twinsburg+high+school+athletics', suggests a potential phishing or traffic-generation scheme. The presence of many external links on disposable hosting further supports the assessment of a link farm designed to obscure malicious destinations.

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.me/pify?keyword=twinsburg+high+school+athletics In PDF document text
    • http://files.energyworx2.co.uk/uploads/1/3/1/3/131398097/gijuwemoxapuw-pileduseja-dejoleve.pdfIn PDF document text
    • http://files.graybeardsaz.com/uploads/1/3/1/6/131606208/gaxodowuk.pdfIn PDF document text
    • http://xaxax.jeanetteluchesestudio.com/uploads/1/3/1/8/131858172/e0e7061fe786ca4.pdfIn PDF document text
    • http://files.truthfulcomics.com/uploads/1/3/0/7/130775583/8273776.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/1/0436/2852/7779/files/angular_4_dynamic_form_validation_on_submit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7543/6705/files/lapasogufalatewimisuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3810/4985/files/abbyy_transformer_3._0_full_crack.pdfIn PDF document text
    • https://5f8c02b0-024f-4999-aabb-56e5325f35c9.filesusr.com/ugd/d43733_b2caa3cc3b2840e7bbbf80513e91bab3.pdf?index=trueIn PDF document text
    • https://55877602-bc44-484f-b78f-07d45f338d9a.filesusr.com/ugd/957c7b_8ee84fdabf0540fc93997a457b83fa6f.pdf?index=trueIn PDF document text
    • https://59c880dd-cadf-4b91-b6f4-cc2059e66460.filesusr.com/ugd/856cea_14bf297302ee4c579a7d336dd21be687.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 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_off0000442a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x442A 5240 bytes
SHA-256: 57f97bc9ea951ea73f854d84de4a449ac9c017b7ca92b6d9f8233c6185249c33
font_01_sfnt_off0000560b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x560B 10512 bytes
SHA-256: 2c86cba93237088f9bef754c6fd102dde088dd29d5749f6e002bd4b8692d22b8

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