Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed664ffcb666d46…

MALICIOUS

PDF

77.0 KB Created: 2021-10-01 10:01:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: be02949a0833ae71cf45f02b93d8977c SHA-1: 0317b813b53f1b1de92587d7f6d2bf168362c0d9 SHA-256: 0ed664ffcb666d46f843db28ac82f44f95fa33debdf5808182b638fd6b78661e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous links pointing to compromised WordPress sites, suggesting an attempt to host and distribute malicious files. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded JavaScript is likely responsible for executing the malicious payload or redirecting the user to the compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

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://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613af3cf1699f---31725118148.pdf In PDF document text
    • https://caribemed.com/userfiles/file/kimabezejewabigijezuxare.pdfIn PDF document text
    • http://travelci.ru/ckfinder/userfiles/files/fexarazubisija.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/161344bdb4acc2---74963233696.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/9ol2d4t00tmt2kjvitp2lknds3/pizajiwid.pdfIn PDF document text
    • http://beijingteye.com/upload/files/jikerik.pdfIn PDF document text
    • http://fabriquetextil.com/js/new/fckeditor/userfiles/file/raselareru.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141074ac669d---60320013781.pdfIn PDF document text
    • https://allmassage.net/upload/file/20210909201514.pdfIn PDF document text
    • https://windfreeklima.com/upload/ckfinder/files/bifawokov.pdfIn PDF document text
    • http://olivetheater.com/userData/board/file/depezuxafa.pdfIn PDF document text
    • https://zhbiotech.com/CKEdit/upload/files/sixipamarupo.pdfIn PDF document text
    • http://bebelino.ru/userfiles/file/tugedimibuvawafaxivirof.pdfIn PDF document text
    • https://indiansabroad.uk/userfiles/file/53231551219.pdfIn PDF document text
    • https://feldmann-spedition.de/pics/userfiles/file/81998252878.pdfIn PDF document text
    • https://topclassgardening.nl/images/file/55672131335.pdfIn PDF document text
    • https://tselectromechanical.com/uploads/CKfiles/files/11284570176.pdfIn PDF document text
    • http://kancelaria-perfect.pl/app/webroot/media/files/tikekamitadasiwutifilit.pdfIn PDF document text
    • http://philipp-haberland.de/images/upload/file/metituwof.pdfIn PDF document text
    • http://www.dfdtrading.sk/ckfinder/userfiles/files/42385620537.pdfIn PDF document text
    • http://tinhdauvietnam.vn/upload/files/41765870590.pdfIn PDF document text
    • http://kuresi-kaitori.com/upload/content_pic/files/mufopegewikefenuvona.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=download+battle+destructionPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b21b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB21B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ca2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA2C 17604 bytes
SHA-256: 8238701e7b94a065d0371c0a0400ea755d193e518a8574443c21eeecc996abb9
font_02_sfnt_off0000e503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE503 15816 bytes
SHA-256: 33991f04255c5107c817b7bc913b7d8be03bd14f462807c5176b6d3568e6f363
font_03_sfnt_off00010d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1B 10688 bytes
SHA-256: b965a8e5939a5c168aa71c2ec65ea757651fe3aab6df64b23259b36eb706e483

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