Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8bba890c101047…

MALICIOUS

PDF

86.4 KB Created: 2021-09-16 00:24:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-07
MD5: 01fe37564356bdb5f7d999811d2fc57a SHA-1: e0ca45b560d6d99c5e61766da9debc9c9a054b44 SHA-256: aa8bba890c1010474791b00884cc7214875747ba63fe4f6bda6d659fd709231d
156 Risk Score

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
  • 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://oniceh.ru/uplcv?utm_term=getinsta+apk+latest+version PDF link annotation
    • https://www.sonorisation-auxerre.fr/ckfinder/userfiles/files/90935470923.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614073249be2a---romupigotavil.pdfIn PDF document text
    • https://tttinox.com/upload/userfiles/files/juseko.pdfIn PDF document text
    • https://wotfiles.com/ckfinder/userfiles/files/33860458025.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/bd61b3438bb8c14b62c3cd9ae60681e9/60150133815.pdfIn PDF document text
    • https://promptcorporate.com/ckeditor/ckfinder/userfiles/files/77770675585.pdfIn PDF document text
    • http://dorisemitchell.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gotulikifinowiripiti.pdfIn PDF document text
    • http://gasasosong.com/upload/fckeditor/file/mudetixalamomoro.pdfIn PDF document text
    • http://myphamlulanjina.com/upload/files/dugizagabuguvera.pdfIn PDF document text
    • https://onlineadda.net/ckfinder/userfiles/files/weduda.pdfIn PDF document text
    • http://weilandvloeren.nl/fckimages/54931722440.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161353625872ac---90950815504.pdfIn PDF document text
    • https://ryokanclub.com/FileData/ckfinder/files/20210912_65675D8B36218BB9.pdfIn PDF document text
    • https://allcondosales.rodeodrivecondosale.com/userfiles/files/vagavupumuboseraboxafow.pdfIn PDF document text
    • https://ruta.hu/ckfinder/userfiles/files/pezadiloronaxotilugotido.pdfIn PDF document text
    • https://akonis.ch/userfiles/files/3106772650.pdfIn PDF document text
    • http://zatacorp.com/upload/files/bubamanosipuvi.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/2f70ea9a826c82f7323124913b1aae8e/tixafuvilevona.pdfIn PDF document text
    • http://hunicorn.hu/userfiles/file/4106086632.pdfIn PDF document text
    • http://rollfactorytogo.com/uploads/files/62460711091.pdfIn PDF document text
    • http://kipia-nn.ru/userfiles/file/tizegipobebulixotu.pdfIn PDF document text
    • http://taiwan-tsai.com/upload/files/50725106611.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_off0000ede5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000105fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105FC 10440 bytes
SHA-256: 99b779b19b7f6e63f263be61fef350c20b60019e362e8f4ac60f54c975d2c617
font_02_sfnt_off00011dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DD9 17744 bytes
SHA-256: 9dce708e3b810e42dd3423632fbab212cc0cd06d8a12609b472b73e5db880414