Malicious PDF — malware analysis report

Static analysis result for SHA-256 78a45be2ae626917…

MALICIOUS

PDF

92.5 KB Created: 2021-03-19 07:41:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3b56f53e31b74a4fe4636c0309f9dd32 SHA-1: 7cd4fc50e3064de4025d0f53e84d045e2ad6fe75 SHA-256: 78a45be2ae6269175b9e99cc64f9b2f974e66fcd50ecf809489acdad715413f5
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, with several pointing to suspicious domains and one specifically identified as a link farm on disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=when+a+scot+ties+the+knot+pdf+espa%25C3%25B1ol PDF link annotation
    • http://emirofficialzm.com/gogifutivivofuvo3i6dx.pdfIn PDF document text
    • https://punekoba.weebly.com/uploads/1/3/4/6/134612552/wufulenejojimitu.pdfIn PDF document text
    • https://ledatomonuv.weebly.com/uploads/1/3/4/6/134686063/4b1a86eab.pdfIn PDF document text
    • http://salonapp.xyz/44060620454f5m4x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489257/normal_603f1f073cc3d.pdfIn PDF document text
    • http://pasipodo.mypressonline.com/the_art_of_the_pitch_book_review.pdfIn PDF document text
    • https://xoniruzi.weebly.com/uploads/1/3/4/8/134869292/3a8c630485d7.pdfIn PDF document text
    • http://igbusinessabouthelp.com/self_confident_meaning_in_urduz4ams.pdfIn PDF document text
    • http://dalifajebuxog.scienceontheweb.net/health_psychology_dissertation_examples.pdfIn PDF document text
    • https://jizetexosobuwek.weebly.com/uploads/1/3/0/7/130740437/69dd7ab.pdfIn PDF document text
    • http://frasqen.online/71925371796eslpx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492871/normal_5ff6af7d14351.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366622/normal_6048cf60e467f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391008/normal_6024c6b9ac879.pdfIn PDF document text
    • https://larezonisu.weebly.com/uploads/1/3/0/7/130738889/sadanu-koxumojun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412896/normal_5fff6e3645e3a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ff2bbb0-71ec-4b84-bf66-5a8b3e22ddb0/62056010659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0775bcd0-993c-4a8d-8926-94760e641347/washington_state_covid_vaccine_delivery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/728c5235-c135-410e-aec1-7fdd7b7af53a/padi_junior_open_water_diver_certification_upgrade.pdfIn PDF document text
    • http://doxokalisawe.myartsonline.com/nonarodavalebuj.pdfIn PDF document text
    • http://dopovis.myartsonline.com/25809378466.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6054c426-6aac-49d6-8aca-7299678db151/polegexijewemawabujopu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D32 5436 bytes
SHA-256: 1acf21dbae7768cd2a1df20451d1af31719cdf4c47628509c1cb6f9ccc95fa28
font_01_sfnt_off00012f78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F78 2628 bytes
SHA-256: 947a22d5170e0a33e875ff6c998fd0763a2eef6813cdc228cce7f17964e1b256
font_02_sfnt_off00013a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A9F 12020 bytes
SHA-256: 70a474c6624084d646304f0710feda97b83b1f5273b5623c32bfb2c00dbbd491