Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2ddc107702359e…

MALICIOUS

PDF

85.8 KB Created: 2021-10-26 13:36:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 8d11ca3ef21877e9ea763b5734280376 SHA-1: da0dd665e97c890ea986eb563aa6932f9ebfa380 SHA-256: af2ddc107702359efdfa6c3aa6008a0eebabfd80f6bc2dd14ad2ab39753dd67c
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://aitrans.cn/UploadFile/file/F1202109210024406208.pdf In PDF document text
    • http://gima.ge/admin/ckeditor/ckfinder/userfiles/files/pupinodulezobiwob.pdfIn PDF document text
    • http://oppedisanorobertosrl.com/userfiles/files/70653083392.pdfIn PDF document text
    • http://iaestedresden.de/userfiles/file/rawobisekifixilewoz.pdfIn PDF document text
    • http://swhos.com/upload/files/nozuni.pdfIn PDF document text
    • http://elskenecologie.nl/files/kenaromulux.pdfIn PDF document text
    • https://indirimlipin.com/calisma2/files/uploads/17856636657.pdfIn PDF document text
    • https://dottoridegregorio.it/public/file/42499899314.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fd98464a53---tefogofezawovefupajova.pdfIn PDF document text
    • https://systematix.pl/userfiles/file/20470967360.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16144e18e58320---92643357994.pdfIn PDF document text
    • https://dubigroup.com/admin/fckeditor/editor/filemanager/connectors/upload/file/pijoxejo.pdfIn PDF document text
    • http://dd-eng.com/files/files/lurubutimeboto.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/8hg2mt5kg2q67ajidjgaa0av4r/50769053617.pdfIn PDF document text
    • http://spielundlicht.de/content_provider/documents/files/kimaboj.pdfIn PDF document text
    • http://hamkr.com/userData/board/file/mufajaxalemebeje.pdfIn PDF document text
    • http://hotspot-usa.com/js/upload/files/baguxapolix.pdfIn PDF document text
    • https://www.vita-organic.eu/admin/ckfinder/userfiles/files/peviwivuxojuzuro.pdfIn PDF document text
    • https://www.tahitotfaluovodak.hu/ckfinder/userfiles/files/vobiw.pdfIn PDF document text
    • http://www.polni.si/Images/files/puragumixekutekaz.pdfIn PDF document text
    • http://www.somdattabasu.com/fckimages/file/kiwogemuzugudaz.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/40c82a360d9f2b17d747b96d55e12c86/weberitorokasakupode.pdfIn PDF document text
    • http://amy-tsai.com/images_express/userfiles/files/6791165034.pdfIn PDF document text
    • https://magyaringatlanadatbazis.hu/dev/_user/file/57112654327.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/4dZi1sgP-vI/uplcv?utm_term=iphone+keyboard+emoji+for+androidPDF 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 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_off0000e44a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44A 10880 bytes
SHA-256: 618e8c5c52fd998f298947474566fc6867f74805b49a87ea793c5de96f9c6b11
font_01_sfnt_off0000fcef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCEF 20100 bytes
SHA-256: 90409ebab2a43dbae191a47fe8b648a74e9a71d907cc588c47e6beda59326f67
font_02_sfnt_off000131a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131A1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1