Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7da4bccb0be5609…

MALICIOUS

PDF

106.1 KB Created: 2022-04-07 01:18:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-28
MD5: 77a5f060d061604cd4e7f0f9df68a43a SHA-1: d390af9aa314867c2778171c708221b9a7a789dd SHA-256: c7da4bccb0be5609309c93eeb54b3774ed49a103ee2fe3ab8c9aae5500b8f630
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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 http://bappeda-jepara.org/app/webroot/js/kcfinder/upload/files/rumiduxam.pdf In PDF document text
    • http://csc-0411.com/userfiles/file/20220223025227_ntrdb1.pdfIn PDF document text
    • http://akademibt.com/resimler/files/59633816751.pdfIn PDF document text
    • http://pixel-pro.ru/upload/file/bosagavito.pdfIn PDF document text
    • http://nsk-nalogov.net/upload/files/bofewesopigulo.pdfIn PDF document text
    • https://wurivebufe.weebly.com/uploads/1/3/0/8/130874680/sedabizo.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/60946116626.pdfIn PDF document text
    • http://dison.cn/filespath/files/20220202162112.pdfIn PDF document text
    • http://j1ent.com/userfiles/file/20220312083516.pdfIn PDF document text
    • https://wexubowepupewaw.weebly.com/uploads/1/3/1/8/131856394/fd7b7c2258a9658.pdfIn PDF document text
    • https://indiantiffin4me.com/nbloom/fckuploads/file/wapawaloruzizoxar.pdfIn PDF document text
    • https://bapepewemeg.weebly.com/uploads/1/3/4/7/134702997/a928b88ef034.pdfIn PDF document text
    • https://lavidibiw.weebly.com/uploads/1/3/4/5/134582964/758aea1e6d4f47.pdfIn PDF document text
    • http://bioengenharia.com.br/public/libs/kcfinder/upload/files/tebufaligamunegiravu.pdfIn PDF document text
    • https://gionggiacam.com/ckfinder/userfiles/files/zuwelozelifejanunu.pdfIn PDF document text
    • http://srmtteaparty.com/uploads/files/202203041514278972.pdfIn PDF document text
    • https://ginabedo.weebly.com/uploads/1/3/4/0/134017532/4440949.pdfIn PDF document text
    • http://mauthietkedep.info/upload/files/jokimewamasado.pdfIn PDF document text
    • https://ladangmimpi2.com/contents/files/83578140330.pdfIn PDF document text
    • https://geneolock.com/locktactyuma/userfiles/file/90211738187.pdfIn PDF document text
    • http://www.dieseproductions.com/upload/customNews/files/20645831515.pdfIn PDF document text
    • https://lovig.co.za/YmrXLWy8?keyword=word%20count%20mapreduce%20java%20hadoopPDF 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_off0001377c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001377c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001377c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1377C 18856 bytes
SHA-256: 604d27f77aede8a50832e6c90b2072d9a778627b706ae3e4240f6a7e110f1950
font_01_sfnt_off000169b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169B3 10760 bytes
SHA-256: 57891b54567d6d1228433754362d0cd8add54503858a8c7f3af5eb89a6b9bd80
font_02_sfnt_off0001824f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1824F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1