Malicious PDF — malware analysis report

Static analysis result for SHA-256 917e37d572831ac8…

MALICIOUS

PDF

84.1 KB Created: 2021-09-13 02:10:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: d4b47416da51262f3d5da5c9d9ced87e SHA-1: 9ecb0c9ae3a1d67515e5a3b1850845387358bf58 SHA-256: 917e37d572831ac81231588738889d6ac5bc499bcac9b5ca845b3ee2b0ba4ba8
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by multiple heuristics, including a critical ClamAV detection and an ML classifier flagging it as a phishing trojan. The PDF contains numerous links to compromised websites and a deceptive download button, suggesting a phishing or malware distribution lure. While no scripts were directly extracted, the PDF structure and embedded URIs indicate it is designed to redirect users to malicious content, likely for further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://drafthe.ru/uplcv?utm_term=baabul+full+movie+download+720p+bluray PDF link annotation
    • http://studiorapizza.it/userfiles/files/32213737330.pdfIn PDF document text
    • https://idealist.ro/userfiles/file/67416588001.pdfIn PDF document text
    • http://copingconversations.com/userfiles/file/dezepixutofudi.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/il575qn4sd1ria8cc0b5mv3ma1/90098028223.pdfIn PDF document text
    • http://phamtrangia.site/upload/files/bifasaxara.pdfIn PDF document text
    • https://workinhotel.com/upload/fckfile/namararasibile.pdfIn PDF document text
    • http://velo.hu/UserFiles/file/94465670378.pdfIn PDF document text
    • http://wojno-stal.pl/pliki/file/86113182536.pdfIn PDF document text
    • http://sicilalluminio.it/userfiles/files/tokoro.pdfIn PDF document text
    • https://leise.ru/admin/ckfinder/userfiles/files/14361222092.pdfIn PDF document text
    • https://aashianarealty.com/file/natobozuwixe.pdfIn PDF document text
    • http://cegled.varosom.hu/userfiles/files/donozedaxozun.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/120205c88645f46fb63fe2da16dc7c97/73384447132.pdfIn PDF document text
    • http://camberwelltaxi.com/survey/userfiles/files/40647601486.pdfIn PDF document text
    • http://vit-physio.de/file/90743806994.pdfIn PDF document text
    • http://queensparkview.com/image/upload/File/bewubogobiwowudodibadiki.pdfIn PDF document text
    • http://rockbond-aac.com/id-admin/fckImages/file/nasejajuzidapabi.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/b5ea7623a5f60a1bcaa7929f44531623/29852578249.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e7b78e263c---35050006840.pdfIn PDF document text
    • http://mikomisushiwc.com/uploads/files/17753318877.pdfIn PDF document text
    • https://livewireeventz.com/userfiles/file/taxika.pdfIn PDF document text
    • http://wolfroccatiassociati.it/userfiles/files/nobosaz.pdfIn PDF document text
    • http://beerskiboot.com/img/upload/file/16152928597.pdfIn PDF document text
    • http://ohadalegistrocbarter.com/ckeditor/uploads/files/4575380171.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_off0000e32e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32E 11244 bytes
SHA-256: d0f52577525f700f417f8afe39c144d6e884aae71ad3b68bd7295a03e81d3bc5
font_01_sfnt_off0000fd6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD6B 17484 bytes
SHA-256: 03f98e9dfd815ab63077275a87db0ce7c8def9408a3aada2ed9e2815260aafaf
font_02_sfnt_off00012af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AF1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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