Malicious PDF — malware analysis report

Static analysis result for SHA-256 28fafea2f72f79ad…

MALICIOUS

PDF

75.1 KB Created: 2021-04-01 10:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4993bbd993ad10cc29dc308c5108a58f SHA-1: d02a8f6fb923313ef280832d1e80b8a61e199ccc SHA-256: 28fafea2f72f79ad05f550d6a9897351f3cf0e7f9c5c21dfeae5f23f89e52a15
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm designed to redirect users. The document body, though partially corrupted, suggests a lure related to technical information, likely to trick users into visiting these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=ford+4.6+timing+chain+replacement+interval PDF link annotation
    • https://s3.amazonaws.com/benuka/87478872921.pdfIn PDF document text
    • http://bupimobim.sportsontheweb.net/how_do_you_fix_a_preparing_automatic_repair_loop.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/android_obd_code_reader.pdfIn PDF document text
    • https://vutujevofi.weebly.com/uploads/1/3/5/9/135971838/gefibagidanuve-nemofokudibawin-totuvu.pdfIn PDF document text
    • https://nukubutanedun.weebly.com/uploads/1/3/5/3/135309192/7a4619eb7130fbc.pdfIn PDF document text
    • https://ratopavitakam.weebly.com/uploads/1/3/4/4/134460251/805c20ee8181b4.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/22488050733.pdfIn PDF document text
    • http://wiwikiru.iblogger.org/visero.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/the_unbearable_lightness_of_being_subtitulos_espaol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dezinolabebosod.atwebpages.com/dimizelererimojegop.pdfIn PDF document text
    • http://tikijot.epizy.com/baghban_full_movie_in_720p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88621d49-f46e-4ace-98b0-c247a3c2fe00/shop_vac_quiet_series_5_gallon_2.0_hp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84ad525e-ab37-459e-8ffb-0cc2edf1348c/to_kill_a_mockingbird_character_worksheet_answers.pdfIn PDF document text
    • http://kutubuge.rf.gd/6638567601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffcc24b1-7eac-4d43-8a09-89c02fb8b697/zobatadufiropubejinu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/676cd6b3-8f86-497f-8ef8-800a3783ec3a/85252981888.pdfIn PDF document text
    • http://telosizaba.onlinewebshop.net/jukenosejekifidog.pdfIn PDF document text
    • http://duxepivol.myartsonline.com/memosajosiboxolufepuzov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d06da0b6-1ea0-4e74-9cf8-81e8c7d1fab0/15336608051.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 7

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_off0000e630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE630 5596 bytes
SHA-256: b0d440950c69cc992226d5ebd0a42366ef5194085b3d275d4e2da6b47814bc42
font_01_sfnt_off0000f92b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF92B 10668 bytes
SHA-256: 5ff3d7dec9654b21f077cb8897f44dcb41db7493f3c382612a1557d7c043a7fc

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