Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97c0101be976050…

MALICIOUS

PDF

83.9 KB Created: 2021-09-13 21:25:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 7bf70d22f5411dc5aca673d39c564308 SHA-1: 38bc80930bb2eb4454ed717a21e0e91f034af97e SHA-256: e97c0101be976050782ec9e80a3cd407aced0ac2f14055ad22a957bcf6c71684
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous links, many pointing to compromised WordPress installations and disposable hosting, suggesting a link farm designed to distribute malware. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classifier flagging further supports its malicious nature. The embedded URLs, particularly the one pointing to an IP address, are highly suspicious and likely serve as a distribution point for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://literie-depot.fr/UserFiles/file/fuzomukenevowipomonejam.pdf In PDF document text
    • https://rodolphe-blanchet.fr/Rodolphe/fckeditor/file/kifoxozugaxipure.pdfIn PDF document text
    • https://kop-trans.pl/uploads/userfiles/files/45960763158.pdfIn PDF document text
    • http://cobansut.com/userfiles/file/pakidebokonixa.pdfIn PDF document text
    • http://jjw-led.com/userfiles/file/filubonaginas.pdfIn PDF document text
    • https://wheelmartthailand.com/image/upload/File/dajebawovubukokeza.pdfIn PDF document text
    • http://doudou.tw/userfiles/files/34050877483.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/1612ea141e28e1---28386174301.pdfPDF link annotation
    • https://ekransamara.ru/files/jiwefutarazawejabebode.pdfIn PDF document text
    • https://grdr.org/paidel/ckfinder/userfiles/files/kotinemomarotosikoxebo.pdfIn PDF document text
    • http://rfaaa.com/UploadFile/file/20210903201812134.pdfIn PDF document text
    • http://ellenia3.eu/userfiles/files/62202587245.pdfIn PDF document text
    • https://innovaciones-plasticas.com/imagenes_cont/sitio/documentos/jewamopunezibuxijatifonip.pdfIn PDF document text
    • https://www.tratedu.net/ssss2018/assets/143ad273/ckfinder/core/connector/php/upload/userfiles/files/f9d4b724fca8d0ccee3eb1a967f4e056.pdfIn PDF document text
    • http://depcip.com/app/views/panel/ckfinder/userfiles/files/razurevokikadawupuzow.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613579a2a9387---vekinotusefilamepapabugu.pdfIn PDF document text
    • http://regcureguide.com/files/files/83860440766.pdfIn PDF document text
    • https://dortmundpools.com/contents/files/vumuj.pdfIn PDF document text
    • https://dalton-english.com/userfiles/file/vigujomunofipadavadidi.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/161367f28ec0b6---65340959571.pdfIn PDF document text
    • https://serviceelectric.ca/userfiles/file/87040582326.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/igk3mhno65h8tdpab0ii03nm9n/74781457020.pdfIn PDF document text
    • http://homeopathyhongkong.org/files/tetatukopofiveji.pdfIn PDF document text
    • http://magogaralbamoble.com/galeria/files/vuwobexefebuzali.pdfIn PDF document text
    • https://safewatersolutions.in/ckfinder/userfiles/files/5909099546.pdfIn PDF document text
    • http://isystem.hu/userfiles/file/ropapasojafuluzetede.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=resident+evil+village+download+apkPDF 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_off0000e47a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47A 17236 bytes
SHA-256: 34d4b93db53a1d47325b07ac99f45601e6e4e876ae0c3d751595c0e09b051403
font_01_sfnt_off000110d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110D6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000128ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128ED 10756 bytes
SHA-256: e32f7a98d6cf08874f74cb6925ce73ed31568befe7e930273c8b881085a2ed53

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