Malicious PDF — malware analysis report

Static analysis result for SHA-256 7777f218ea49d899…

MALICIOUS

PDF

94.6 KB Created: 2021-04-05 10:10:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: aeb89e885c4cb0289b746fbb63451a77 SHA-1: d0a13deebf1937e21ae7151a22f9de928328b76c SHA-256: 7777f218ea49d899f1c21d034d071f84f8d9fa5eaaff65816360b40c780a0cbc
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or link-farming attack. The document contains numerous external links, many pointing to disposable hosting, suggesting an attempt to redirect users to potentially harmful content or for SEO manipulation. While no scripts were explicitly extracted, the presence of XFA forms and malformed streams indicates active content designed to exploit vulnerabilities or facilitate malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 8

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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://cdn-cms.f-static.net/uploads/4379500/normal_60674e6c162a6.pdf In PDF document text
    • https://zoxujaratufopa.weebly.com/uploads/1/3/5/3/135399722/7064475.pdfIn PDF document text
    • https://fofumugu.weebly.com/uploads/1/3/4/4/134445246/80d1afd70ee1715.pdfIn PDF document text
    • https://narosixepitifon.weebly.com/uploads/1/3/5/9/135960882/penubimewawezut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490380/normal_5fecbc266813e.pdfIn PDF document text
    • https://lonokowikur.weebly.com/uploads/1/3/5/3/135384913/2977634.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403120/normal_6054dd495e3db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479675/normal_5fcce0cb5b716.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416789/normal_5fdc843188027.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444115/normal_604250af125dc.pdfIn PDF document text
    • https://luselovuxetox.weebly.com/uploads/1/3/0/7/130739290/2910638.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://feedproxy.google.com/~r/wb/ENAH/~3/0IJhScypsXo/wb?keyword=percy%20jackson%20titanPDF link annotation
    • https://16564176-4c62-44d7-82e3-1dea6b832d73.filesusr.com/ugd/5e57cf_bc666981cb3e4d479f36cb2249103fea.pdf?index=trueIn PDF document text
    • http://nakeviw.myartsonline.com/best_settings_for_canon_vixia_hf_r800.pdfIn PDF document text
    • https://320f262d-053d-461a-9009-498fa3b044f5.filesusr.com/ugd/8e680a_724de260962b4d08872782bdf87178ae.pdf?index=trueIn PDF document text
    • https://0f926834-650c-4d5a-b53c-ad60ae412ccc.filesusr.com/ugd/6a44d8_578c3d9b4827433db583d055de958eba.pdf?index=trueIn PDF document text
    • http://baletax.onlinewebshop.net/41143403658.pdfIn PDF document text
    • https://71a5d838-4e22-4830-8da1-7955ec3365f5.filesusr.com/ugd/f2f43e_128da64dff2e48f9ab250eb7d7ecd95c.pdf?index=trueIn PDF document text
    • https://7c3dd69e-6649-485e-b385-36acc2971cd6.filesusr.com/ugd/cf9ff1_4737c3fdbc5e455a8fef468201f0dc53.pdf?index=trueIn PDF document text
    • https://b7b9a0d4-d71d-433a-9dbc-8293b1c729aa.filesusr.com/ugd/979434_b61dbb5d2c084b3d8e65d1675a8e025a.pdf?index=trueIn PDF document text
    • https://91c7bc9f-df77-4dbd-ae51-8bcf521f3e61.filesusr.com/ugd/1df9ea_8de1f061375e423b8cf36698f41b2b4c.pdf?index=trueIn PDF document text
    • https://00c0516a-c822-4344-a779-6f74e039753d.filesusr.com/ugd/9e41f0_4e77c92228744db8b291a743864ee344.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000128f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128F6 5228 bytes
SHA-256: 62dd84c7c02f58936c96851dbac6443eee61589a479c4f20d22fd3203176da92
font_01_sfnt_off00013ae6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AE6 10576 bytes
SHA-256: ffa6b61e694ea7877e6e65235b0b247dc0559b392e43f73873419f5a07ac6c66
font_02_sfnt_off00015eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EEF 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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