Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf1d6a40d66e17d1…

MALICIOUS

PDF

75.9 KB Created: 2021-03-12 11:20:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0fe6a50a76b2259e06515b647a5ebdb4 SHA-1: be4eb31727d9883c561398d091d00a864cb84497 SHA-256: bf1d6a40d66e17d1f9ed8df7aa7317905146f37b1039e62a9ac6daf3c68e60d7
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains embedded JavaScript and numerous external URIs, indicating it is designed to redirect users to malicious websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The embedded JavaScript is a common technique for initiating malicious actions or redirects within PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pelibifir.ru/wix?keyword=was+and+were+worksheet+for+grade+1 PDF link annotation
    • https://cdn.sqhk.co/nuroteditu/ghGhhED/48098458378.pdfIn PDF document text
    • https://cdn.sqhk.co/bubuzibiv/DCZggoc/free_gems_brawl_stars_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499656/normal_602b4ac298366.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450353/normal_603d039a4a51a.pdfIn PDF document text
    • http://apelsins.space/42905470859r3u5m.pdfIn PDF document text
    • http://5coupons.info/how_much_does_it_cost_to_repair_a_refrigerator_ice_makerqfk4w.pdfIn PDF document text
    • http://baby-slings.ru/class_12th_sociology_notesoyekr.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/bifjcpq/block_strike_hack_2020_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388627/normal_600a7a76e19bb.pdfIn PDF document text
    • http://tadosuzewamu.medianewsonline.com/can_you_whitewash_with_chalk_paint.pdfIn PDF document text
    • https://cdn.sqhk.co/dopiporajen/c3KBkjf/duwetamejalelipu.pdfIn PDF document text
    • http://cosmosqrab.online/how_long_to_cook_a_pork_roast_in_a_pressure_cookerj0o0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413007/normal_5ffa017bb0dc8.pdfIn PDF document text
    • http://fovikoxesaweziz.medianewsonline.com/blue_book_of_grammar_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503387/normal_600ca14bdbdba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372073/normal_5ff78ab99f7f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377095/normal_6019118bb55f2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wudazebej.atwebpages.com/how_to_increase_pressure_on_breville_espresso.pdfIn PDF document text
    • https://ba10d46a-d7c1-43af-8542-f1a50f31aa8a.filesusr.com/ugd/4dded2_a2a242566f5b4acc9d84451757f5ea54.pdf?index=trueIn PDF document text
    • https://d90bda3b-35dd-409f-9d4b-b4a00d881a52.filesusr.com/ugd/b88e3d_1ec61dda3a084cce9fb21db5353cbf54.pdf?index=trueIn PDF document text
    • http://vimixof.onlinewebshop.net/mipunudajiropusorawiwuba.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_off0000ec1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1B 5360 bytes
SHA-256: 08fbeb66c638979f0478aa33892c43950b4c6191a8674c295fde7bb04d353e4d
font_01_sfnt_off0000fe72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE72 10440 bytes
SHA-256: 0e0ed20a92989528bbc3d1ee1ef8b0d648f5146fd08009bd565409daaa380138

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