Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf9f5836ab8ec7ce…

MALICIOUS

PDF

74.4 KB Created: 2021-04-05 05:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e600e150d26384530f11dbd64504905d SHA-1: d96de6d22708fe410911849cd3f895c03ed846e9 SHA-256: bf9f5836ab8ec7ceaab696d98d23683430ef81f815062a602a9a32f8d6efef4f
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable hosting, many of which are disguised as software downloads. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm for SEO purposes, likely to distribute malware or unwanted software. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://golowaki.ru/wix?keyword=poweramp+apk+full+version+2020 PDF link annotation
    • https://cdn.sqhk.co/logulemuset/cDlhiih/dr._dave_charleston_wv.pdfIn PDF document text
    • http://robugipunebib.mygamesonline.org/fabejubelakefevilunowusob.pdfIn PDF document text
    • http://ketrovk.xyz/is_kundli_matching_necessary_for_love_marriagejmli7.pdfIn PDF document text
    • http://gradstroy.su/natural_acrylic_nails_shortbq1io.pdfIn PDF document text
    • http://meetsol.xyz/what_is_motivation_sports_psychology5683t.pdfIn PDF document text
    • http://mybiol.site/likufapafasitu1mwi3.pdfIn PDF document text
    • http://cpskras.website/pharmacology_drug_classification_liszkdab.pdfIn PDF document text
    • http://table-wait.com/ex_888_casinoc1wox.pdfIn PDF document text
    • http://tublitalia.fun/sozozozume99nya.pdfIn PDF document text
    • http://sitebomobegux.sportsontheweb.net/g_shock_ga_100_lg.pdfIn PDF document text
    • http://werojati.getenjoyment.net/approach_to_hyponatremia.pdfIn PDF document text
    • http://storezone.info/86946642321kebb4.pdfIn PDF document text
    • https://cdn.sqhk.co/wedowetaso/fgihaDB/free_visiting_card_maker_app.pdfIn PDF document text
    • https://cdn.sqhk.co/vopupevomate/a7GfowQ/79532151145.pdfIn PDF document text
    • http://artemk.ru/monster_truck_show_melbourne_2020ijxtu.pdfIn PDF document text
    • http://ca-manalapan.space/754489451125vyz1.pdfIn PDF document text
    • https://cdn.sqhk.co/nogegamapagi/gghghgy/kajaverigisoxen.pdfIn PDF document text
    • http://erethiztzj.space/clovis_roi_des_francs_cm1hgpa4.pdfIn PDF document text
    • http://pusovemolexed.scienceontheweb.net/rewuzob.pdfIn PDF document text
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://ligekasuxube.onlinewebshop.net/wakavobixolutubixufoweraf.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1C 5340 bytes
SHA-256: b78fc2e259fc177edafd04d6d672e484604a534a0efc76f8a44a4cf2477b1013
font_01_sfnt_off0000ed3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED3A 9700 bytes
SHA-256: f3972d44dbd639829d18853f96ee39a69f2b4ddbbd3555dcd9a7a1172b2c1960
font_02_sfnt_off00010e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E61 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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