Malicious PDF — malware analysis report

Static analysis result for SHA-256 a597c3bdd5162016…

MALICIOUS

PDF

76.3 KB Created: 2021-03-14 01:16:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9c1a9fa75faf4532c3f37417696562f0 SHA-1: e418d641e0b33f72a729407fa56010b9b4645d9a SHA-256: a597c3bdd5162016158cb554c21a7bef9fece5b397f3bff6c358db4767a0ac5a
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm or SEO spamming operation. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9264

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://zajinet.ru/award?keyword=cours+d+algorithme+et+programmation+pdf PDF link annotation
    • http://tifusavegapawuf.mygamesonline.org/what_is_management_and_leadership_theories.pdfIn PDF document text
    • https://cdn.sqhk.co/fegojujor/jjEiand/95546215826.pdfIn PDF document text
    • https://cdn.sqhk.co/livixugakuf/fTjdXih/glorious_eleven_football_manager_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/2Die5gJ/52853126630.pdfIn PDF document text
    • http://fudazozotakaxal.mywebcommunity.org/segawenuvedaluvewapukepiz.pdfIn PDF document text
    • https://cdn.sqhk.co/tufuboloruj/ajceNlF/el_pase_elite_de_noviembre_2020.pdfIn PDF document text
    • http://8gusevshop.website/caritas_de_emociones_para_dibujar_facilesol0a5.pdfIn PDF document text
    • https://cdn.sqhk.co/baxoladipezu/jdbEw0P/serig.pdfIn PDF document text
    • http://ferobuxanax.iblogger.org/fairway_solitaire_free_android.pdfIn PDF document text
    • http://bimoriz.getenjoyment.net/15500998689.pdfIn PDF document text
    • http://fabermanufacture.ru/maytag_front_loader_washer_drain_pump9yhtq.pdfIn PDF document text
    • http://vereffka.xyz/misusudupivagaxij8qpkc.pdfIn PDF document text
    • http://girlita.space/el_inversor_inteligente_libro_completo_gratis2o1k9.pdfIn PDF document text
    • http://scm03.ru/buboximibaxumu9bpm0.pdfIn PDF document text
    • http://sepoxudozixo.sportsontheweb.net/gajomitoranufamiki.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c1bbde11-5cda-4f7c-8b74-b2fe90b484f5.filesusr.com/ugd/1c8c6c_dee489bdcb35492e8c79279b271654d3.pdf?index=trueIn PDF document text
    • http://tezipibuboxigo.epizy.com/tobujobalew.pdfIn PDF document text
    • http://sirevonigira.epizy.com/whirlpool_ultimate_care_ii_washer_drain_pump.pdfIn PDF document text
    • http://senovavokugured.rf.gd/rezaruvumomixukibigesen.pdfIn PDF document text
    • https://9ef77391-fdd1-48d8-ba15-364b07375333.filesusr.com/ugd/ebefdf_75b85a17761745d092088d8e0db47d80.pdf?index=trueIn PDF document text
    • https://ee897e78-a157-4eb5-8a47-d615096087a2.filesusr.com/ugd/113e89_967cea24e71b4cefa1f00674be5ab8d5.pdf?index=trueIn PDF document text
    • https://ebba3e40-d49f-4cc8-b137-373bb1124918.filesusr.com/ugd/384ea4_fc8a70ea3ae740c2849f3cbe3fefc2cf.pdf?index=trueIn PDF document text
    • http://domirewuzi.epizy.com/cdc_pneumonia_vaccine_schedule.pdfIn 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_off0000f645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF645 5360 bytes
SHA-256: ef392e01a069671f1d8b3075f04df7e5e9f9aace3028c335c9bf807c7352b429
font_01_sfnt_off0001084f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1084F 12280 bytes
SHA-256: cbb48688040ce4183d10482dc619ab1b5bb7fec4612a57f766b0542c694d9967

Open this report in the interactive analyzer, or submit your own file for analysis.