Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ad2c8e05d53a031…

MALICIOUS

PDF

104.5 KB Created: 2022-03-31 23:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-20
MD5: e59a734cb3c43b9e01c921117237c5e2 SHA-1: fd47a0d75c2a15cc8d1c4a1818cf98754ddc40f8 SHA-256: 9ad2c8e05d53a0310dcaebb6e1d524e9b94b0d3dfa5d4cd11a463699703851d7
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to manipulate search engine results or distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution via the linked PDFs. No scripts were extracted, but the overall structure points to a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://yoyep.co.za/YmrXLWy8?keyword=que%20es%20la%20felicidad%20biblia PDF link annotation
    • https://melesosinipedo.weebly.com/uploads/1/3/4/4/134475371/wonagiw.pdfIn PDF document text
    • https://gurelupukuji.weebly.com/uploads/1/3/0/7/130775622/9cc28b.pdfIn PDF document text
    • https://nibovipuduri.weebly.com/uploads/1/3/0/8/130814681/49ccd.pdfIn PDF document text
    • https://lidoxuma.weebly.com/uploads/1/3/4/5/134584164/xelepiwemedubapij.pdfIn PDF document text
    • https://jilowenuvugema.weebly.com/uploads/1/3/4/8/134897306/leretemife.pdfIn PDF document text
    • http://orbitsecurity.qa/pro_mvp_tech/uploads/file/vosavomux.pdfIn PDF document text
    • https://fifitedogij.weebly.com/uploads/1/3/4/7/134747960/juxebaran-vituputub.pdfIn PDF document text
    • https://wojafegozotug.weebly.com/uploads/1/3/1/6/131606577/6633619.pdfIn PDF document text
    • http://ros-grad.ru/fck_editor_files/files/8156419578.pdfIn PDF document text
    • http://hk-sai.com/ckfinder/userfiles/files/dezasupole.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/161fe5ded5aa58---99887777537.pdfIn PDF document text
    • http://praguynakorn.com/praguynakorn/picture/datapro/files/jupubutabanizebilid.pdfIn PDF document text
    • http://www.regional4.org.ar/administrador/kcfinder/upload/files/28808927599.pdfIn PDF document text
    • https://rafoduju.weebly.com/uploads/1/3/4/6/134680113/4021441.pdfIn PDF document text
    • http://objets.immoweiss.lu/userfiles/files/kikaropibesefefativosid.pdfIn PDF document text
    • https://galuxenezinex.weebly.com/uploads/1/3/4/4/134437763/4374942.pdfIn PDF document text
    • http://webyork.co.uk/kcfinder/upload/files/63787172706.pdfIn PDF document text
    • https://lomapasaxanigef.weebly.com/uploads/1/3/1/1/131164081/fff3e94748317d.pdfIn PDF document text
    • https://raxasowofano.weebly.com/uploads/1/3/2/6/132681821/fonepi.pdfIn PDF document text
    • https://gaxowewogilul.weebly.com/uploads/1/3/4/4/134401205/kupevovim.pdfIn PDF document text
    • https://kajumosezu.weebly.com/uploads/1/3/4/7/134749214/2485507.pdfIn PDF document text
    • https://www.caposalasicilia.com/admin/ckeditor/kcfinder/upload/files/situnajum.pdfIn PDF document text
    • https://gazetitorujij.weebly.com/uploads/1/3/4/5/134599815/35e675c7a.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off000132c9.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000132c9.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000132c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132C9 18560 bytes
SHA-256: 332fd06663abc3344beb8d062f9e1a03944ddd4ae2aa637a17affe0f4456b008
font_01_sfnt_off0001626a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1626A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00017a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A81 10344 bytes
SHA-256: 77d20f51c607ff6c3fd8d0e520b2f62d42417cc724e0b6d7a17da27f61ea82d7