Malicious PDF — malware analysis report

Static analysis result for SHA-256 87581c480402d41f…

MALICIOUS

PDF

81.4 KB Created: 2022-03-31 23:11:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-04
MD5: f10a7b475a044395aa7568bba9fb973f SHA-1: c672bff735e32432c0613a4c8fd289248d1cc52c SHA-256: 87581c480402d41f74867586a5852f9f912c760cbd89136975709565db8ce020
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://mofalapew.weebly.com/uploads/1/3/4/3/134307760/gukazukibedebib.pdf In PDF document text
    • https://kusonanozeko.weebly.com/uploads/1/3/0/7/130775507/a5df4b624f.pdfIn PDF document text
    • https://albertscience.com/ckfinder/userfiles/files/81908351029.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/b95e0d41218d13cd6b3abef9d39319c2/lofudasiwunot.pdfIn PDF document text
    • https://mshoki.com/contents/files/kibewusubageti.pdfIn PDF document text
    • https://topirameji.weebly.com/uploads/1/3/2/6/132682330/wumogebigoluk.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/162087ff418fc7---zuvamew.pdfIn PDF document text
    • https://popofexepazor.weebly.com/uploads/1/3/2/6/132680818/b3b8fe7.pdfIn PDF document text
    • https://jabenawonidibe.weebly.com/uploads/1/3/5/3/135385032/pupelujukejoga.pdfIn PDF document text
    • https://akvanova.ru/sites/default/files/13138871886.pdfIn PDF document text
    • https://pagodatalk.com/_UploadFile/Images/file/saregopox.pdfIn PDF document text
    • https://xameramavojipav.weebly.com/uploads/1/3/4/2/134265998/modesirajuf-jamesedusadusuk.pdfIn PDF document text
    • https://viduturuv.weebly.com/uploads/1/3/6/0/136082320/nazofineguvix.pdfIn PDF document text
    • https://skidnapping.com/uploadfiles/files/75050122103.pdfIn PDF document text
    • https://fpcofmacon.com/nbloom/fckuploads/file/88933951287.pdfIn PDF document text
    • https://rinuxusopav.weebly.com/uploads/1/3/4/6/134679155/e5b72b67807e.pdfIn PDF document text
    • http://zeminyerkaplama.com/upload/ckfinder/files/zivazasixir.pdfIn PDF document text
    • https://magnumattachments.com/ckfinder/userfiles/Files/45718077252.pdfIn PDF document text
    • http://servetgumrukleme.com/kcfinder/upload/files/89836940478.pdfIn PDF document text
    • http://lucchetta.net/userfiles/files/raxedodokareniwigilegot.pdfIn PDF document text
    • https://luxury77.com/kcfinder/upload/files/gazikamotido.pdfIn PDF document text
    • https://fipugodegiposal.weebly.com/uploads/1/3/4/6/134687615/7120266.pdfIn PDF document text
    • https://susuravi.weebly.com/uploads/1/3/1/1/131164319/9374786.pdfIn PDF document text
    • https://naloguvobiwulup.weebly.com/uploads/1/3/1/1/131163976/zenamolivemutuvesini.pdfIn PDF document text
    • https://wirut.co.za/YmrXLWy8?keyword=hp%20elite%208000%20motherboard%20driversPDF link annotation
    • 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_off0000c127.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c127.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC127 17024 bytes
SHA-256: dfee70260cb8d3f82d6ee1d591e0896a1c9eb7bf54eed3bbbf6ea60de2362a17
font_01_sfnt_off0000edff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFF 11080 bytes
SHA-256: 1aee52cca1489839c3c004b37a7af1ae1878cbac4d370046e85e6cd34ccb24f0
font_02_sfnt_off0001078c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1078C 16476 bytes
SHA-256: 3fa85efc355fca48bb69f59586b136ed36437f8c05f750f9415fc1f46f7a0c2c
font_03_sfnt_off00011e7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E7E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1