Malicious PDF — malware analysis report

Static analysis result for SHA-256 1edb70a4256ee56e…

MALICIOUS

PDF

107.9 KB Created: 2021-02-12 15:02:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b9fdca42ff32bf644485820d6b0e6df3 SHA-1: 3deeb94fce6cfd21638e3fc9d6383e3deeff910c SHA-256: 1edb70a4256ee56e87e18544aa6ffd4c58ec061e1859d3cc345d720722a05cc6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with many pointing to disposable domains and exhibiting link farm characteristics. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of malicious activity.

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://leonvi.ru/123?utm_term=earl+warren+high+school+football PDF link annotation
    • http://axecheat7.xyz/webm_converter_to_mp4_apkv6yis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376372/normal_601074f2ec1bb.pdfIn PDF document text
    • https://fometixivoros.weebly.com/uploads/1/3/1/6/131637143/woginumuxuvo_xevasad_rabekizipeg_zeviw.pdfIn PDF document text
    • https://gebobofivogaxe.weebly.com/uploads/1/3/5/3/135308574/a57b6d3f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421207/normal_5ffbd4987fa7c.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/gSgdMCJ/gadifaze.pdfIn PDF document text
    • http://wutanitof.22web.org/30828525.pdfIn PDF document text
    • https://cdn.sqhk.co/bilanogakiw/Ojjhfuu/21112142737.pdfIn PDF document text
    • http://circus.market/2001_mitsubishi_montero_sport_ownersujtx7.pdfIn PDF document text
    • https://cdn.sqhk.co/fekigimuzib/2nkjdTA/27919339894.pdfIn PDF document text
    • http://ita-fitness.fun/travis_scott_quavo_album_downloadp109d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503987/normal_5fd5f8ca791be.pdfIn PDF document text
    • https://basopuseg.weebly.com/uploads/1/3/4/7/134703880/sujapapixovujopuzo.pdfIn PDF document text
    • http://metazoaapc.fun/greatest_hits_of_the_90s_playlistttxj6.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/2jcS8eq/rjr_radio_jamaica_news.pdfIn PDF document text
    • https://zofawuzi.weebly.com/uploads/1/3/5/3/135323082/999b9c4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gagonunanu.epizy.com/conclusion_of_hr_internship_report.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16613 5332 bytes
SHA-256: 1c42d81c88dc3219297714593cd1916bc4ad63c9051d27600a9cbe2bc7bd7edd
font_01_sfnt_off0001784a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1784A 12912 bytes
SHA-256: 47c95299244d2bbc389dc635229fcb12f25f5792f6f2699485e1fbc4f9af3ede

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