Malicious PDF — malware analysis report

Static analysis result for SHA-256 567d2872aa31cd08…

MALICIOUS

PDF

74.4 KB Created: 2021-09-20 16:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 080a2e1e972a854fbce39832429bb53e SHA-1: 60fced21b68de2400917a0046074c517c6275378 SHA-256: 567d2872aa31cd089f333773bd0505e28b0a7b481de68978f841732159b1ccdd
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to disposable hosting and are structured as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded JavaScript is likely used to facilitate redirection to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://blow-w124.com/js/upload/files/63225711499.pdf In PDF document text
    • http://tovicetour.com/FileData/ckfinder/files/20210918_788EB721079C9867.pdfIn PDF document text
    • http://memsports.com.br/admin/libs/ckeditor/ckfinder/files/tipuzikisod.pdfIn PDF document text
    • http://www.kymkarajok.net/tiedostot/files/gewegiga.pdfIn PDF document text
    • http://luijkzonwering.nl/image/file/32155495394.pdfIn PDF document text
    • http://integrotech.eu/zdjecia/file/tozukanepusiropafew.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614185ccb8f10---livonafumudopuze.pdfIn PDF document text
    • http://dieta-plus.pl/userfiles/file/95297025272.pdfIn PDF document text
    • https://ngenadmin2.nextgenphotosolutions-beta.com/app/webroot/files/file/29778163460.pdfIn PDF document text
    • http://xn--38-mlcqjbufcz6h.xn--p1ai/userfiles/file/32793082247.pdfIn PDF document text
    • https://slezanie.eu/userfiles/file/26795142763.pdfIn PDF document text
    • http://willowslakerhea.org/userimages/tofexelelofagotavetopu.pdfIn PDF document text
    • https://careersourceokaloosawalton.com/files/public/77262604064.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/i7ljt00cbuqsvq7jj2pqgv6le8/70247368926.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1614816a867a93---bowoxulifodenisetepofiwut.pdfIn PDF document text
    • http://ordineveterinarireggioemilia.it/userfiles/files/femaniw.pdfIn PDF document text
    • http://savitaco.com/uploads/images/files/rovikuxu.pdfIn PDF document text
    • http://www.pvvc.cz/files/19725844132.pdfIn PDF document text
    • http://gdgom.com/upload/file/210913192211024025u2xhl5ufnglz.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144acb6820a3---wapaxopawidozefekaxakukur.pdfIn PDF document text
    • http://brickchamber.com/ckfinder/userfiles/files/lafujonebunapixe.pdfIn PDF document text
    • http://carnow.jp/js/upload/files/63975741180.pdfIn PDF document text
    • http://ankaser.com/userfiles/file/51724642174.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=ccleaner+mod+for+pcPDF 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_off0000bafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAFC 18360 bytes
SHA-256: f81305562b1099e278f53fa15e4c2e91c33d236aed3c710f33bee769f18da058
font_01_sfnt_off0000eb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB33 10456 bytes
SHA-256: b79b1f5ceeccd4081527f425e38f7d16b3e75db6a3cc93617fc4d44116592459
font_02_sfnt_off000102df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102DF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.