Malicious PDF — malware analysis report

Static analysis result for SHA-256 c98e79c01803abab…

MALICIOUS

PDF

68.0 KB Created: 2021-03-06 00:23:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 17bbf05d56cc5d72d406cb6147ea01d4 SHA-1: fb00a0eb85a5acc30f0fce4f1a8ed43f874a9ca8 SHA-256: c98e79c01803ababa736d17fe4a64e177cbadf773381803349171c1542356b65
66 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing attempt. The ML classifier strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious intent, likely to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://kuzutuzo.ru/strik?utm_term=can+you+get+144hz+with+hdmi+to+displayport PDF link annotation
    • https://majejuwusi.weebly.com/uploads/1/3/2/3/132303270/8610274.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501632/normal_5fff06a077a27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448341/normal_603528c505d35.pdfIn PDF document text
    • http://lazotub.mywebcommunity.org/80342323120.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372360/normal_5fe6a28415a80.pdfIn PDF document text
    • https://cdn.sqhk.co/zotiperugi/fVjhqNt/monster_battles_tcg_cheats.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481053/normal_5fedac984378f.pdfIn PDF document text
    • https://gibodogud.weebly.com/uploads/1/3/5/9/135994226/e15eae5.pdfIn PDF document text
    • https://cdn.sqhk.co/nepofigiper/hfZBRs3/solozadarakugafasaki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403565/normal_6042ab331b521.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385198/normal_60313e685160b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530868/normal_5fff0e6b3c44d.pdfIn PDF document text
    • https://wuzijitegufizu.weebly.com/uploads/1/3/5/3/135320378/wivexeg.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/what_is_the_average_price_of_a_trampoline.pdfIn PDF document text
    • http://vumamanepu.sportsontheweb.net/zokugimirazepuwaxewij.pdfIn PDF document text
    • https://zivibesojosilit.weebly.com/uploads/1/3/5/3/135304262/9796750.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366009/normal_5ffcd3ca5c46c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kotidox/lisinejejikemepemod.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/lexosukal.pdfIn PDF document text
    • http://juludiripo.myartsonline.com/consejo_escolar_de_participacion_social_sedu_coahuila.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/how_many_quarts_of_oil_does_a_2009_scion_tc_take.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cacd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCACD 5660 bytes
SHA-256: 4b73b7872bd6f421b1cfec647531d56c1ffd718da545b9566ba37cca89b0ec5d
font_01_sfnt_off0000de17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE17 10672 bytes
SHA-256: 750fc811216946937f4385512f0aa60c52bcb19dbfd18f50158934e7db3f8b3e