Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dd4eb05d67da81c…

MALICIOUS

PDF

80.8 KB Created: 2021-09-06 00:09:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 824a94e5da74233da8912bcc1f99b3c2 SHA-1: acb92faf8679ac94475d479b55068158a22b7863 SHA-256: 0dd4eb05d67da81cf1ab19daee87f49ca8e2f2d12df5d4afbdda8bac7bdeef1a
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous websites, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of multiple distinct hosts and the use of 'utm_term' in URLs suggest an attempt to obscure the true destination and potentially leverage SEO tactics for distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 6

  • 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.
  • 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://camgloberealtor.com/userfiles/file/donobiporiwemovap.pdf In PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/bdekjeqhculpmb7qm70c0dpcd5/40553833565.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16126450bc5d8e---tawosufowe.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/qqh5f315oqopf1fospttebaqr4/16761543077.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1608c2a845a6de---kegafilewon.pdfIn PDF document text
    • http://myqself.com/upload/files/tokowosebowiwexo.pdfIn PDF document text
    • http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c83655c7a3---12563037159.pdfIn PDF document text
    • https://cjsc.se/ckfinder/userfiles/files/59057073273.pdfIn PDF document text
    • https://fenicia.uy/fenicia.com.uy/uploads/files/76780407979.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/160e4edbf83060---766393417.pdfIn PDF document text
    • https://mobilieroccasion.fr/uploads/file/dojijapevuna.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/2b624c7689df09fb2fe6ab7b2f3112ac/gejupukububilam.pdfIn PDF document text
    • http://re-view.online/fckFiles/file/54475805761.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bff623ef430---41714613425.pdfIn PDF document text
    • http://healthywithhart.com/res/file/75038837727.pdfIn PDF document text
    • https://rhuyscampingcar.fr/images/files/19037457297.pdfIn PDF document text
    • https://kawanmto.com/contents//files/foselal.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/f17424d39aadcb732003b77544fab67d/87514729553.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/c4d2c6336ca3f30402e617588950f418/56383709661.pdfIn PDF document text
    • http://www.gleason.com.au/application/third_party/ckfinder/userfiles/files/45225800461.pdfIn PDF document text
    • https://dycmc.com/DATA/upload/files/202107160812251544.pdfIn PDF document text
    • https://sahyadrisevasanstha.in/userfiles/file/rodapumevikifugon.pdfIn PDF document text
    • http://www.scsi.coop/wp-content/plugins/super-forms/uploads/php/files/b4aa37fd6949a2f6033d455eb2a3ccc4/zufinej.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=ferroli+water+heater+manualPDF 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_off0000d7c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C9 18420 bytes
SHA-256: 66b30f8e670fff8df898532c9dbe7caaf714e7b0b73307795806b0e1588b5b24
font_01_sfnt_off000106b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B0 10368 bytes
SHA-256: d00caf875e588bee057e7478e97264d3eff570e9a8d9702a6af83612df494fe4
font_02_sfnt_off00011dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DEE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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