Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dff2c48dc8c6bef…

MALICIOUS

PDF

72.7 KB Created: 2021-08-28 01:49:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: e7adf87fc6bd7cfbef6103a3ead836d4 SHA-1: 5bc22ac2f17d749b98e1e9a1730ebe74eb9da3b7 SHA-256: 0dff2c48dc8c6bef6247df3448f9eba2c615b7d76f0e2f49b838ab00f71cfb34
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a link farm structure, suggesting the document's primary purpose is to redirect users to external sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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 https://suprizpin.com/calisma2/files/uploads/35865675202.pdf In PDF document text
    • https://yuss.it/file/vipigodevolujinikafoxedu.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1610b4416f2e63---loruxewuko.pdfIn PDF document text
    • https://vivaldiroberto.com/img/files/mediafiles/file/fupumobas.pdfIn PDF document text
    • https://sjamsul-hidajat.id/ck_uploads/uploads/files/pemavemilugazorul.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/88dnlrrg2uhelro7djipqrcnee/99132335339.pdfIn PDF document text
    • http://mt-filtration.com/uploaded/file/127911619160e33cd8a5a6a.pdfIn PDF document text
    • https://sherwoodchamber.org/ckfinder/userfiles/files/ninajizuluzo.pdfIn PDF document text
    • http://rheinmotel.com/userfiles/file/85704328933.pdfIn PDF document text
    • http://pass38.com/images/contentimages/files/70574418065.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e671663570---bufusimujujeguzis.pdfIn PDF document text
    • http://gallery4walls.com/upload/editer/file/tikemunubewuxi.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/egsqlvhrrldsdhmm6gofic843d/fajonajixemos.pdfIn PDF document text
    • http://pogservice.ru/userfiles/file/81737384648.pdfIn PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/ef62f1c5c89e25d1df4e8d8c6888c7c2/39500334719.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/d7a500d6eb7e399fddb38a203b444c28/rusizumuponunepelufef.pdfIn PDF document text
    • http://www.tokyomagic.jp/images/library/File/rewetabesifafu.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611ade8ea7fac---nukigon.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607b02bd0e4cd---wubiketivi.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c77ba074ec---jodazerolozebajebu.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/d9f44df480b3a57ca80cbec868d1ced0/kirumanotowizotipit.pdfIn PDF document text
    • http://eldmsh1.ru/js/ckfinder/userfiles/files/27969925655.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/gmqu4r0u9prdm5tie5hb6bfre4/lebinunet.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+get+the+minty+pickaxe+for+freePDF 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_off0000bc53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC53 11100 bytes
SHA-256: 7a7af416f16f252051b05a702372d62bf8082631c72586d3564f3fb0674d47d1
font_01_sfnt_off0000d612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD612 15000 bytes
SHA-256: d280b02b94e82d173992a4a5e98b3701f3ffe3be8313e5dc69b89598a5817897
font_02_sfnt_off0000fbe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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