Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cd6c37f712b2612…

MALICIOUS

PDF

79.6 KB Created: 2021-03-25 03:28:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e5aed938423bf19e065dd0ee6c8e782f SHA-1: b673aba88a849855915c6a9e044217debe481738 SHA-256: 9cd6c37f712b261208c2b99ae3b81f6cdd2622e3fcd99b7038ec73e7152fac20
186 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a link farm, pointing to various domains. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically classified as Pdf.Phishing.Trojan. The embedded URLs suggest an attempt to redirect users to potentially malicious content or phishing sites, aligning with a spearphishing attachment tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 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://resalured.ru/wix?keyword=acm+multimedia+asia+2020 PDF link annotation
    • https://dapazigozasonim.weebly.com/uploads/1/3/4/4/134466252/fotivu.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/why_does_my_bosch_dishwasher_not_fill_with_water.pdfIn PDF document text
    • https://jokasagumejede.weebly.com/uploads/1/3/1/0/131070006/39d550e.pdfIn PDF document text
    • https://viforiler.weebly.com/uploads/1/3/0/8/130874197/3a9b2f49.pdfIn PDF document text
    • http://pelabinowoguk.getenjoyment.net/b._ed_syllabus_download.pdfIn PDF document text
    • https://voxapinave.weebly.com/uploads/1/3/2/7/132740917/987316.pdfIn PDF document text
    • https://damokilusul.weebly.com/uploads/1/3/4/4/134463963/foborabubazamel.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/brightness_app_for_android.pdfIn PDF document text
    • https://jedexapotup.weebly.com/uploads/1/3/4/4/134472831/risobinifezopo-magomi-geleb.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/gunuzozidiruzedenalata.pdfIn PDF document text
    • http://ralugugifoxatir.scienceontheweb.net/alkaline_vegan_cookbook.pdfIn PDF document text
    • https://magalezofutik.weebly.com/uploads/1/3/4/5/134599277/sinaf_geguduzedesor_gejofagugus.pdfIn PDF document text
    • https://jutoxanifi.weebly.com/uploads/1/3/5/3/135321179/xuxesuwudupir_rotapokalosizon_vobekope.pdfIn PDF document text
    • https://gilepijojuju.weebly.com/uploads/1/3/2/7/132740412/7918482.pdfIn PDF document text
    • https://wukarogokemek.weebly.com/uploads/1/3/0/7/130739107/9870035.pdfIn PDF document text
    • https://bevibobozile.weebly.com/uploads/1/3/4/7/134700853/9314666.pdfIn PDF document text
    • http://zozitaze.mypressonline.com/95233304156.pdfIn PDF document text
    • https://bekawoxe.weebly.com/uploads/1/3/4/5/134529307/supalo_repekixane_kagiv_nojenaposa.pdfIn PDF document text
    • https://wikejawuwe.weebly.com/uploads/1/3/1/4/131437941/b5f232252488.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/5347dfb5-6d81-41ca-911e-5da91f9c08c3/kemonifimirekowezev.pdfIn PDF document text
    • http://domuromu.atwebpages.com/university_of_maryland_electrical_engineering_phd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f91c9617-7f73-4172-acfd-61a73e393f33/tixomazitujugogik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4d63ec9-d711-4b26-afc2-bc5dce394fcc/79311168692.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf725727-f783-4981-93d8-14a476373033/rebomonagubukatil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c370120-ca22-4dd9-8cf3-9753cd5dd22f/rafofir.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_off0000f963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF963 5252 bytes
SHA-256: 4fe5a308515bd8d5d6e2aeecddc94408e7345204319c8eabab2d64f6c7f396b9
font_01_sfnt_off00010b2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B2E 11256 bytes
SHA-256: 2b225ae96ef6b011a645d536d04ea8a4eaa01ebf4c82631dea3e6e081a515844