Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e537b6e77059dea…

MALICIOUS

PDF

79.2 KB Created: 2021-03-16 10:54:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0cf5977a38faa2099701b0d5e0731083 SHA-1: bba4cce7b083dd1647651bc4d70bf0b9c9b9ff32 SHA-256: 4e537b6e77059dea918370a87bbd43f372cc7113f0d23889645d6afa3348cd15
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and heuristic analysis indicates it functions as a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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 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://druttle.ru/award?keyword=ansi+code+pdf+download PDF link annotation
    • https://s3.amazonaws.com/wukara/google_play_music_sd_card.pdfIn PDF document text
    • http://fafijitesulexiz.mygamesonline.org/64127629527.pdfIn PDF document text
    • http://gisisavodure.22web.org/namisitaduwinusasasi.pdfIn PDF document text
    • http://maxobujixeweden.sportsontheweb.net/bach_cello_suite_1_guitar.pdfIn PDF document text
    • http://dakisemakegag.sportsontheweb.net/sewogaboloniviwejebimig.pdfIn PDF document text
    • http://zugapuvu.mywebcommunity.org/modo_congiuntivo_e_condizionale_del_verbo_innaffiare.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/harry_potter_and_the_half_blood_prince_movie_length.pdfIn PDF document text
    • http://xulodol.mygamesonline.org/wusupemavababab.pdfIn PDF document text
    • http://rimiripa.mypressonline.com/english_language_teaching_method.pdfIn PDF document text
    • http://jelusuvobirolen.mywebcommunity.org/bojik.pdfIn PDF document text
    • http://rabekapudi.iblogger.org/25605405252.pdfIn PDF document text
    • http://gopidap.scienceontheweb.net/stock_market_lessons_for_beginners.pdfIn PDF document text
    • http://ziwegiwe.iblogger.org/bertrand_russell_the_conquest_of_happiness.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/acoustic_wave_equation.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/net_speed_monitor_app.pdfIn PDF document text
    • http://dixurujisefumet.22web.org/jeopardy_sheet_music_violin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuvovidesom.epizy.com/70797578942.pdfIn PDF document text
    • http://lodumojokexiku.onlinewebshop.net/gillette_fusion_proglide_styler_manual.pdfIn PDF document text
    • http://pekomuvave.myartsonline.com/5099948896.pdfIn PDF document text
    • http://kesexawes.rf.gd/guzebinukadevibedojib.pdfIn PDF document text
    • http://jusapirizut.rf.gd/18610083879.pdfIn PDF document text
    • http://rowoniwetob.atwebpages.com/69389409872.pdfIn PDF document text
    • http://nowakimelufumi.epizy.com/how_to_convert_linksys_wrt54g_to_be_an_access_point.pdfIn PDF document text
    • http://pilevujomeludo.rf.gd/learn_coding_for_free_reddit.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

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_off0000f8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C6 5136 bytes
SHA-256: c645c28c09af11b90cc644dc6eac90e91f045247f77fe4cd7db9a2bcfef9f874
font_01_sfnt_off00010a6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6E 10896 bytes
SHA-256: ac0df515e7629455e09495ffbacbe19d6ee26bd05085c0873807cd431220662a

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