Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd49d251ffdbe2c…

MALICIOUS

PDF

87.4 KB Created: 2021-09-08 15:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 88de366efba5ae6606948309ff0b4458 SHA-1: 2484bce8acda380540392a6ec5e79c04d958bdce SHA-256: 3dd49d251ffdbe2cc41207d9740e92a92b4e345dedd441bfede9fa9aec9f183b
96 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 5

  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://krisoc.ru/uplcv?utm_term=il+somnium+scipionis+pdf PDF link annotation
    • http://kssi.ir/public/userfiles/file/gomumi.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/88811102710.pdfIn PDF document text
    • http://aallergy.friend-match.com/upload/files/fenimidujekasimu.pdfIn PDF document text
    • http://ndt-tl.ru/upload/file/lokox.pdfIn PDF document text
    • http://artgrafika.cz/userfiles/file/levizozoxemekerobadiwiz.pdfIn PDF document text
    • http://skia22.ru/pic/file/35609333380.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16135c4c679e59---31137751840.pdfIn PDF document text
    • https://bevillelecomte.ovh/ckfinder/userfiles/files/ropetalej.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16135694838e06---47690273639.pdfIn PDF document text
    • http://autowassenindex.nl/images/uploads/79268666148.pdfIn PDF document text
    • http://paulabenveniste.com/UserFiles/file/dasokirotevewumetekekeman.pdfIn PDF document text
    • http://highendschmiede.de/highendfiles/file/21354174911.pdfIn PDF document text
    • http://www.mmd.ntou.edu.tw/ckfinder/userfiles/files/kukuwaxopi.pdfIn PDF document text
    • http://le383.com/uploads/files/10795444894.pdfIn PDF document text
    • https://yourwebcenter.com/files/file/1418751330.pdfIn PDF document text
    • http://yhbinternational.com/userfiles/file/dufiline.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/c0eb098332fa23788149cdbf7cbc3a34/nipabafolakutis.pdfIn PDF document text
    • https://kitapkaplama.com/upload/ckfinder/files/wejexo.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/jineze.pdfIn PDF document text
    • https://hizlipin.com/calisma2/files/uploads/6927211831.pdfIn PDF document text
    • http://kitpaisal.com/mypicture/file/6126270643.pdfIn PDF document text
    • http://dayou.tw/uploadpic/files/202109021004169894.pdfIn PDF document text
    • http://elmbbq.com/uploads/files/dixuzakusu.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF199 10340 bytes
SHA-256: bba78e25838be68509530e165ff10f1302ea06f8f9c3c1380532e2b527390e29
font_01_sfnt_off000108d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108D1 18164 bytes
SHA-256: 5035f9d308de6e26267bfd46b645513a937639e5a967989e1b76d8a9c929fc39
font_02_sfnt_off00013857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13857 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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