Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfd8c2985b0ede4a…

MALICIOUS

PDF

87.2 KB Created: 2021-07-03 03:58:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: e54ba74affdc932512ba5173ad4993f8 SHA-1: e387755cb73d9c4bc682e11e1959b7de3c0d7e39 SHA-256: bfd8c2985b0ede4a32eb64f76f40a129d361d01d3925104946ba71d871da2992
124 Risk Score

Malware Insights

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

The PDF file was detected as a phishing trojan by ClamAV. It contains a link farm that points to multiple domains, some of which are hosted on compromised CMS uploads and disposable hosting. The embedded URLs suggest an attempt to lure users to external sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4274

Heuristics 5

  • 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
  • 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://przychodnia-felinskiego.pl/uploads/editor/file/pawozinikeridogasudejo.pdf In PDF document text
    • http://jarosi.hu/files/file/50095289182.pdfIn PDF document text
    • http://biotledlight.com/userfiles/file///vadesuxu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d3c1a50d37---xasomeladezepekomep.pdfIn PDF document text
    • https://rhodium.vn/uploads/news_file/93679176356.pdfIn PDF document text
    • http://gesundezellen.de/neu/userfiles/file/nezosaxawe.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082ece4ea9e6---rezofosumoxeminofujo.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/fa1dfd8123ead305940230ceb58c61f5/35267910274.pdfIn PDF document text
    • http://waukeganeast1980.com/clients/877304/File/repojuzu.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/d1c41f3f793b3fbf97d10e1ff1b4fbe0/xulamixulas.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/69297202384.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/8j221opue2aib9kokaj93patqg/47032844451.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/sp7nl092oqjveql1guobkbqnds/xufitorad.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607aaf1fbc2c5---83241652116.pdfIn PDF document text
    • http://deauville.ru/files/file/limosujalawulilakujagif.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/f21jtecocs9jtgkktck93hg5st/mexasoxagefamizadakuji.pdfIn PDF document text
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/d66ce42585575d0d3a8da9ec38d005c6/raxerovezuxurezobafo.pdfIn PDF document text
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af7dae34b5b---21043512771.pdfIn PDF document text
    • http://xinyaoqiye.com/upload_fck/file/2021-6-28/20210628121533194208.pdfIn PDF document text
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/a522e692f8c8beb50ac840d926f00f4f/18166798740.pdfIn PDF document text
    • https://ekransamara.ru/files/74698041843.pdfIn PDF document text
    • https://nbtele.com/en/cache/fck_files/file/fawuririjowedelugesegox.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/a6f0881788fd882bd346b94687e54150/ririmajipa.pdfIn PDF document text
    • https://daiichigroup.net/uploads/news_file/58245708538.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16083f1d89f135---lujejenaxojamoxexoli.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16070d4a312308---84897253821.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=cbse+class+9+physics+work+and+energy+solutionsPDF link annotation
    • 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_off0000f5ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5ED 11524 bytes
SHA-256: df24f8ab7fa67727d71f0bf72fe78ed0ec56594ca5c32d1d8885688cb1d63fa9
font_01_sfnt_off000110e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110E3 16088 bytes
SHA-256: d06246de5fbca08a8e71b3266423534d5cc020e17a1f81eafc946de7058d617f
font_02_sfnt_off00012615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12615 17296 bytes
SHA-256: 2ed54bec3c112916d12a2e68eb4c7507e0a342b51a16aa142e7958bc06c440af

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