Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f0267602a1e29c…

MALICIOUS

PDF

103.6 KB Created: 2021-09-07 13:32:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: ba6d0bee021d2a40d0e5b8d539b1a833 SHA-1: 5d2d92f262868337cc001d6f2bd9a0d3aafeac3e SHA-256: 96f0267602a1e29c5deae1e83d610b31831687bafc3bdbc7cf3de1ea149e9b2a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to numerous compromised WordPress upload sites and disposable hosting domains, likely intended to redirect users to malicious content or phishing pages. The embedded URLs and link farm structure strongly suggest an attempt to distribute malware or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9895

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://aquatrustfina.com/userfiles/file/60957777921.pdf In PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078581a85ca3---71437377969.pdfIn PDF document text
    • https://alshaabcoop.com/userfiles/file/mulolofota.pdfIn PDF document text
    • https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/89cfecda512e6274db7c88e00bea9e21/36108630249.pdfIn PDF document text
    • https://baptistfriends.org/media/78755055103.pdfIn PDF document text
    • http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/53cd98582f32b0dc3dc6620f5be798c9/37538222144.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a8228584181---36527968761.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607b777340556---85840174072.pdfIn PDF document text
    • https://laetitiabernard.fr/images/file/53765061609.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db28f8b7a36---pesilimilekitogomiwogegu.pdfIn PDF document text
    • https://transpack-krumbach.de/_upload_bilder/_filemanager/file/nadudet.pdfIn PDF document text
    • http://dgjinhak.kr/DATA/upload/files/202106060249408749.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b7c4e0c53c8---80305509035.pdfIn PDF document text
    • http://permanentnimakeup-brno.cz/userfiles/files/86042529844.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/5ba69ed4607ae489375490bc9b108438/xuzabepuxuvuvifemo.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a216c83c63e---96450969331.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac47cce127---28194182933.pdfIn PDF document text
    • http://15881588.com/ckupload/files/ruginurenelunigi.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/8hgc32va5hfmtpm7c41ab46ggi/ziwusuziw.pdfIn PDF document text
    • http://alwaysshine.com/fileimage/file/41047895135.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f063cb4953---zifuforituguduvigir.pdfIn PDF document text
    • https://balarampurblock.in/ckfinder/userfiles/files/2701018193.pdfIn PDF document text
    • https://lacgl.org/upload/editor/file/12532935817.pdfIn PDF document text
    • http://hoinhikhoavn.com/img/files/wixerojotutol.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=emotional+intelligence+book+free+download+pdfPDF 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_off000116f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F9 19448 bytes
SHA-256: 134f4ae9b0dd6a433893fd71450d1fbc942bf437d7f0003a51ffa28b09776f56
font_01_sfnt_off000148bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148BB 16132 bytes
SHA-256: 071bac7a3a90310621307d68123817e30fba7c89f9e5021c4391eb43bd8b9137
font_02_sfnt_off00015e32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E32 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00017649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17649 11096 bytes
SHA-256: b1c0ca4f628032e643c4d3e1fcd14e0ca61242b7dfe8441bce2c9ea7a6766948

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