Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f2620fab3459cc4…

MALICIOUS

PDF

85.7 KB Created: 2021-09-15 18:29:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: d1f05e5515b9a885f3e0401195e41625 SHA-1: c9ed2870281b54735f90cfcc843036e3971b71f1 SHA-256: 0f2620fab3459cc46e26174420c0eb4bc9e56c1e0b5efc2e00ce384c30d5202e
196 Risk Score

Malware Insights

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

The PDF document contains a large number of links, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document's structure and link farm behavior align with spearphishing attempts to trick users into visiting untrusted sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 8

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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://corporatiegids.nl/uploads/files/watafadejetajalobagapugim.pdf In PDF document text
    • http://riviera.az/userfiles/file/62333728398.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/27254269269.pdfIn PDF document text
    • https://mahanakhon.pacedev.com/ckupload/files/sokunabuv.pdfIn PDF document text
    • http://xn--h1acbpobggs.xn--p1ai/data/files/luwanatamepasujomumelif.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613b6813965c8---76239484124.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141dfe0e2193---34473980448.pdfIn PDF document text
    • http://ristorantebiscione.com/userfiles/files/26918822434.pdfIn PDF document text
    • http://www.me.ntou.edu.tw/ckfinder/userfiles/files/20210902_151336.pdfIn PDF document text
    • http://addon-colsman.somantec.net/ckfinder/userfiles/files/towerunidomu.pdfIn PDF document text
    • http://kythuatviet.vn/uploads/userfiles/file/sivuzexuxemujerefabak.pdfIn PDF document text
    • http://otczenacts.com/media/files/mafinevatulasekifedo.pdfIn PDF document text
    • https://cfbadalona.net/ckdata/files/fanusuk.pdfIn PDF document text
    • https://lifesmart.lifesmart.ro/ckfinder/userfiles/files/8527136186.pdfIn PDF document text
    • http://hanifeugur.com/image/files/rokenufijup.pdfIn PDF document text
    • http://roocenter.ru/upload/file/51281974206.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613c9a770213c---81305541010.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c0ccf52a0e---76006440234.pdfIn PDF document text
    • https://www.poolsrus.com.au/application/third_party/ckfinder/userfiles/files/92833064399.pdfIn PDF document text
    • http://tokyosushilohaus.com/uploads/files/46894279088.pdfIn PDF document text
    • http://usefchina.com/uploadfile/file///2021090913325363.pdfIn PDF document text
    • http://gelateriacool.it/userfiles/files/fupuvozu.pdfIn PDF document text
    • https://aynadakikemalizm.com/resimler/files/vofuwefarezonure.pdfIn PDF document text
    • http://palazzodiaz.com/userfiles/files/nazapowi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+transfer+files+from+iphone+to+androidPDF 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_off0000e65d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65D 19160 bytes
SHA-256: c492dd9275cf25ecee6fa34a2896478974ef674f0f4a731b4412ffceca19ec43
font_01_sfnt_off000117ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117EF 10840 bytes
SHA-256: cada30fbc887180d76552f1eec2c3875d26cc4616c145404ae7f64ddf54c3f1d
font_02_sfnt_off000130c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130C0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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