Malicious PDF — malware analysis report

Static analysis result for SHA-256 d069ada1da1b5f0c…

MALICIOUS

PDF

83.0 KB Created: 2021-09-18 15:26:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 12c2a223b4b34f2cff0a048282a2eb8d SHA-1: 7d8f3646ffdbfeecd53d70bccb422a3d16872803 SHA-256: d069ada1da1b5f0c9d3d189acc291f33d47ff76bdfbe0c40f1176864f4254138
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to domains flagged as compromised or disposable hosting, suggesting a link farm designed to lure users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The file's structure and link farm behavior align with techniques used to distribute malicious payloads or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://website-design-company.in/dev3/damodar/ckfinder/core/connector/php/userfiles/files/rilaw.pdf In PDF document text
    • http://yjbiotech.cn/upload/files/luxuvifabavuxuw.pdfIn PDF document text
    • http://busankid.com/webfiles/board/file///wexidefitonuroxikivugemi.pdfIn PDF document text
    • http://elard-group.com/ckfinder/userfiles/files/83169381071.pdfIn PDF document text
    • http://sithome.com/upfiles/file/20210916022250.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/161300e0a51d6b---pubejokawagofumezofa.pdfIn PDF document text
    • http://www.jokilaaksonratsastajat.fi/file/doxuxizaluxigezobofipe.pdfIn PDF document text
    • http://www.pzkexie.com/up_files/file/83482326309.pdfIn PDF document text
    • https://jungleflightchiangmai.com/Uploads/files/92104541141.pdfIn PDF document text
    • https://vrrc.heart.net.tw/ckfinder/ckfiles/files/taxuduzaduget.pdfIn PDF document text
    • https://kujainspectors.com/candyticket/uploads/page_images/files/zulirotujevuj.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16144303d5be09---noberiterarope.pdfIn PDF document text
    • http://dezis.ru/uploads/files/50190292945.pdfIn PDF document text
    • http://www.hebrewforreadingcomprehension.com/content/putagofitaxesu.pdfIn PDF document text
    • http://highdesertrent.com/newsite/images/uploads/file/soxirefaxizitenudadif.pdfIn PDF document text
    • https://afmiletisim.afmiletisimajansi.info/resimler/files/74602557036.pdfIn PDF document text
    • http://nurugelexport.com/ckfinder/userfiles/files/ranekedelaxoz.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/e5386ec76496422817db130e31ef8e53/menodolu.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16133c48a69c58---40864440658.pdfIn PDF document text
    • http://bagliodeimille.it/userfiles/files/85004719228.pdfIn PDF document text
    • http://narnivet.com/userfiles/files/12494051197.pdfIn PDF document text
    • https://gamepinleri.net/calisma2/files/uploads/woxag.pdfIn PDF document text
    • http://dsacare.com/admin/uploads/file/27092485411.pdfIn PDF document text
    • http://ned.ru/uploads/files/33443186565.pdfIn PDF document text
    • http://sziszolg.hu/editor_up/gutaxuzudigib.pdfIn PDF document text
    • http://automyjka.pl/automyjka.pl/userfiles/file/vimefox.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+get+live+tv+on+jailbroken+firestickPDF 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_off0000de17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE17 11016 bytes
SHA-256: 07063b948eb810c42b09771b2bc94eabd4429043ddfebe348e6fad0df0bafd7b
font_01_sfnt_off0000f7dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7DC 17704 bytes
SHA-256: 81edd102d26aebed853857e29a17b01bb8b856ad44227d47414f79139dd0776b
font_02_sfnt_off000125b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125B8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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