Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e53809635b8fb58…

MALICIOUS

PDF

73.3 KB Created: 2021-02-27 06:18:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: eef41dbb4c08557948dca1509ab4024c SHA-1: 2150cd589039b591cf2891fdf91549b8bd68d620 SHA-256: 7e53809635b8fb588185820f5620a3d0cd715f7769541504eca3b0cd9be91ef9
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicative of a link farm or SEO spam campaign. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs point towards techniques used to redirect users to malicious sites.

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://soxebez.ru/award?keyword=britax+boulevard+clicktight+convertible+car+seat+cover+set+circa PDF link annotation
    • http://kakafeg.scienceontheweb.net/monitorear_red_wifi_windows_10.pdfIn PDF document text
    • https://vuxidozeni.weebly.com/uploads/1/3/4/6/134669409/xixezu.pdfIn PDF document text
    • https://gewilowada.weebly.com/uploads/1/3/0/7/130776716/1442744.pdfIn PDF document text
    • https://cdn.sqhk.co/vefoxewijuja/veEX5hd/hide_and_seek_calgary_netflix_review.pdfIn PDF document text
    • http://bumawusuka.mypressonline.com/34316861797.pdfIn PDF document text
    • http://ledukamu.iblogger.org/diwofelimijefinagaduvag.pdfIn PDF document text
    • http://vodabutopidaru.getenjoyment.net/how_to_put_jlab_in_pairing_mode.pdfIn PDF document text
    • https://sazotavivi.weebly.com/uploads/1/3/1/1/131164406/9286266.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385887/normal_5fdc7cce622ea.pdfIn PDF document text
    • https://dolepaxutafajur.weebly.com/uploads/1/3/0/9/130969408/393294.pdfIn PDF document text
    • https://gojufepegaxop.weebly.com/uploads/1/3/4/3/134339744/7489340.pdfIn PDF document text
    • https://cdn.sqhk.co/dawadetugas/gcmKaih/8449396409.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/Lw5WWge/82189451077.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lebasasasob.epizy.com/56575078630.pdfIn PDF document text
    • http://gejevebo.epizy.com/30193394142.pdfIn PDF document text
    • http://virefixifefuke.epizy.com/naneropovegeluvijemonopu.pdfIn PDF document text
    • http://kedisijusa.onlinewebshop.net/vifomo.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_off0000ddfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDFA 5584 bytes
SHA-256: e4e3c3263326a203d7e291e1d165604aef0d816a728b43ee15ea6f6531d9fa29
font_01_sfnt_off0000f0f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F2 10636 bytes
SHA-256: 0600f225307ca1a88cade02fe3bb023974b7d89152e3bea03168b1ce04808f3c

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