Malicious PDF — malware analysis report

Static analysis result for SHA-256 430765c192e740c2…

MALICIOUS

PDF

72.0 KB Created: 2021-02-27 22:08:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 76bd11501544ef59240540061ebcb24c SHA-1: a0dd9db76c1af28cb0fc66d2fb5a9db26476f64d SHA-256: 430765c192e740c2fd7f1c669df82388cc497fcced62c28482f34237c021100f
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a significant number of external links, indicating a link farm strategy. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing malware. Although no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards a malicious document, potentially leveraging embedded JavaScript for redirection or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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/aws?utm_term=fluke+t5-1000+calibration+manual PDF link annotation
    • http://winovigamaj.mygamesonline.org/all_souls_day_2020_catholic_date.pdfIn PDF document text
    • https://xofoxinef.weebly.com/uploads/1/3/0/8/130874051/277317.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/81694251042.pdfIn PDF document text
    • https://nuzewotamomumaf.weebly.com/uploads/1/3/4/7/134701518/tirizoruli.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480598/normal_600b21d4d93fe.pdfIn PDF document text
    • http://bapatavusirave.mygamesonline.org/87860536929.pdfIn PDF document text
    • https://wogizirimabote.weebly.com/uploads/1/3/5/3/135337148/tuvifuxizatob.pdfIn PDF document text
    • https://lipodemofuxe.weebly.com/uploads/1/3/5/3/135316225/15ec799391a929.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/3704703838.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500678/normal_602c356670f66.pdfIn PDF document text
    • http://rafupofamurawaf.mygamesonline.org/45367636517.pdfIn PDF document text
    • https://sifejolo.weebly.com/uploads/1/3/1/4/131410009/lapanizikefudel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498801/normal_6027354ad52ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zitadufafasid.onlinewebshop.net/como_cambiar_de_pulgadas_a_milimetros_en_mastercam.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/josasidofilem.pdfIn PDF document text
    • http://mawokale.myartsonline.com/what_is_the_scope_of_interior_designing_in_pakistan.pdfIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/rinnai_infinity_20_installation_price.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_off0000d71e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD71E 5276 bytes
SHA-256: e8c32472775d978d18dd368a381a4340ef60ddfdd72b67478dc2bdf43d99c1fb
font_01_sfnt_off0000e90f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE90F 12936 bytes
SHA-256: a5bb6a17fb1130fd7e8b379fdec0dd59c4b9e6f4f6ff88c6c15a90e4b74c1710

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