Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f6e86653ec3302…

MALICIOUS

PDF

111.8 KB Created: 2021-06-18 11:45:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: baccf471bf9ceaa18db570886039a225 SHA-1: a1f54bd5fa4b4178093308dac944e9a86165654e SHA-256: 96f6e86653ec3302059caf76b3bc32a9397dc79f76ec4790cd3ad1e68ae083df
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7765

Heuristics 5

  • 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
  • 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://yournamebadges.com/withyourdog/cms_uploads/file/46067055699.pdf In PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609adcea560a8---kixagabivimazafalibalalu.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b27004c5408---lakasutedokuwakizum.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/0d480e281123adc830d3040221ba2e5f/8643585146.pdfIn PDF document text
    • http://kutscher-customs.de/gfx/userfiles/files/43590490038.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc4b9bd4a0---vakevonixajajosovixomef.pdfIn PDF document text
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160c9b37d82e84---30090979486.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/b2462ff0b69ca097660ddb9cd22c9747/gozoti.pdfIn PDF document text
    • https://radio-aurea.eu/files/file/sixorexozu.pdfIn PDF document text
    • https://roweryelectra.pl/app/webroot/uploads/file/16218126912912.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/nfimdnuffcd922dgv829lji887/jowebipiwagunipolalazizuw.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607085ba4dbbd---32239559209.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/3efa39537a266bbef493f6bdf37c5068/35884862705.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/60bde6ab7327a438f1c8159850b16201/dokabelukagadagurodaw.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160825d059f4cb---pawijisifokiwizumubemaj.pdfIn PDF document text
    • https://wavesmaroochydore.com/wp-content/plugins/super-forms/uploads/php/files/hqsdiq3mh74hj4bf3dnbb4rdh2/sefugakibu.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/15bba59a9f5058e78c16bdd0f83e75cd/42817111405.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=ome+tv+mod+apk+no+banned+2020PDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0001a80d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1A80D 9733 bytes
SHA-256: edc28a1f3d5265a88c07d5e1a96f1ada4e6f44455be243610ef04c2bb9497f45
font_00_sfnt_off0001352d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1352D 12028 bytes
SHA-256: 1f135afc7443e123667ef5a2cdc762ca0b8078b4559a54969385dbb63e0dca1a
font_01_sfnt_off00015c9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C9F 5364 bytes
SHA-256: b03f11e276938b5af975f57c0086025a6115b870c2aacc13a3319aade8b27a3a
font_02_sfnt_off00016ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16ECD 21732 bytes
SHA-256: 947902c4a43c1068b15bdd8a943f7fb83353fc92cc9fadfeeabf1b0f4b708c8d

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