Malicious PDF — malware analysis report

Static analysis result for SHA-256 b434022ae6b60336…

MALICIOUS

PDF

96.0 KB Created: 2021-09-04 20:17:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 1a748fa2f1b90efdbef108a0197f313b SHA-1: 0ae86e4386e88ef3c9cc526a9843bedfc91b81f1 SHA-256: b434022ae6b60336c2686984bb4eb97dd2db55364d2b1d79ffb21cd7f58e9834
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links pointing to compromised WordPress sites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3dedf224df---95220804341.pdf In PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/f2e3da21dedd9e52dbddfcb2130bbcbe/18491698839.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b28b7e9be64---7835601812.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607432e90c3f2---bakewerito.pdfIn PDF document text
    • http://universalthailand.com/images/uploads/ckfinder/files/gewufoze.pdfIn PDF document text
    • http://toyotarentcar.net/FileData/ckfinder/files/20210618_F8F952662735090D.pdfIn PDF document text
    • http://granitemountainranch.net/userimages/repuguzuzexiki.pdfIn PDF document text
    • http://ahdjcm.com/upload/files/25388861702.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac3b7ba6df6---40102463596.pdfIn PDF document text
    • http://a-aqua.fr/ressource/site-image/files/91084512956.pdfIn PDF document text
    • http://gistys.com/userfiles/file/gibasezivanapikub.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/160fe92f010bdb---95115867028.pdfIn PDF document text
    • http://mikomisushiwc.com/uploads/files/25180312170.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b6cee0c3e4---bobov.pdfIn PDF document text
    • http://daisytalavera.com/userfiles/files/fomosed.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/160a97d4cf306f---36784034.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/soglvbubocv2u0t193tap6kc1h/64298239584.pdfIn PDF document text
    • http://aviteksural.ru/admin/ckfinder/userfiles/files/78395645697.pdfIn PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c1589de8df---nusalolobeserikidoxe.pdfIn PDF document text
    • http://ordinate-ltd.com/file_media/file_image/file/67317962434.pdfIn PDF document text
    • https://bonaparte.cappencms.com/templates/files/monovofamirilu.pdfIn PDF document text
    • http://kossuthdigisuli.hu/userfiles/file/wunotadabugotubil.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b908ccc9295---43524853512.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=nimona+pdf+baixarPDF 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_off000111a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111A6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000129b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129B8 19308 bytes
SHA-256: 9056f99d95d4621b89c86da2e5a761691f1487f575acca05d7cc047a807d3d16
font_02_sfnt_off00015bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15BB4 10436 bytes
SHA-256: 9a66460e94f7e7429d1dd43bfd752d12fd59d47856d9ef6e4ada7238f5076747

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