Malicious PDF — malware analysis report

Static analysis result for SHA-256 97e59ad19fa63fe9…

MALICIOUS

PDF

106.6 KB Created: 2021-03-31 08:08:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fb1539b138292379750b52f3d34d398e SHA-1: 74b8453549c9382e402ec488728e4f7ce42a1c4d SHA-256: 97e59ad19fa63fe99371921d1a3141577ce514b78e6e6c7ee0ba88974ff8a1ae
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a high number of embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://resalured.ru/award?keyword=tratamiento+asma+pediatria+pdf PDF link annotation
    • https://s3.amazonaws.com/wapabefizosumi/malware_scan_free.pdfIn PDF document text
    • http://wasatosu.sportsontheweb.net/physiology_of_synapse.pdfIn PDF document text
    • http://vumamanepu.sportsontheweb.net/golexalewe.pdfIn PDF document text
    • http://letnesil.xyz/libros_apocrifos_son_falsosar5l2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465539/normal_5fc79b2bf2461.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/gnu8wgd/683318909.pdfIn PDF document text
    • http://interior.estate/5135123489ipsgt.pdfIn PDF document text
    • https://cdn.sqhk.co/diridenafa/ijIsNjg/assuring_transformation_data_collection.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487192/normal_600ae5ca58991.pdfIn PDF document text
    • http://cabinetshub.xyz/vajozivesanopekufabuz4dpm.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/pofajusejogoju.pdfIn PDF document text
    • https://cdn.sqhk.co/bebiwamulanu/gifjcid/63359930678.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393034/normal_5fd7d3b372397.pdfIn PDF document text
    • https://cdn.sqhk.co/guletema/jdXggij/nottingham_city_hospital_ward_names.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/64576195897.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/sentry_fireproof_safe_model_1100.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427267/normal_5fe93cde9bc1a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cda84be5-0c54-4c05-8389-97bb004c798d.filesusr.com/ugd/fa9f00_8a172cfc90cc41f9b243153258525d82.pdf?index=trueIn PDF document text
    • https://fb9345b8-40be-4608-a8ff-9c5427dba92f.filesusr.com/ugd/98d639_b4328e45cbd84a3e93185ea4ef7dedf5.pdf?index=trueIn PDF document text
    • https://5c51e3d7-2896-491e-a255-1b002e356b93.filesusr.com/ugd/5b6ce5_2ffcc11f327344f19d00ce3e9d37904e.pdf?index=trueIn PDF document text
    • https://368051e9-4199-40ea-b9a2-dc6e6f83cb3b.filesusr.com/ugd/6260fe_fb76530e32db489b9b19bf3d8240c66e.pdf?index=trueIn PDF document text
    • https://c7bff75e-0a19-4817-9d47-fca4cf08161b.filesusr.com/ugd/3b6424_6ec335050063480f8cfe58f942c1c670.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_off000160e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160E1 5104 bytes
SHA-256: 116392874be1c8d05f728e831c99ec4473ce4fb47599f083414b9605f692634f
font_01_sfnt_off00017223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17223 12508 bytes
SHA-256: e3a9064b0e2168240cce5eeb6e54c0c6780f228ba45a3f7e8a7168442e24acc2

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