Malicious PDF — malware analysis report

Static analysis result for SHA-256 44e7552ef5460937…

MALICIOUS

PDF

72.2 KB Created: 2021-05-05 04:20:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99b68116fe010b3e43ac46144abebd9c SHA-1: c25d90da6522833da89980745e7a70e5177d5a2b SHA-256: 44e7552ef54609372baf39e671f443e58b5989f8ab88ed707b688d13be78651d
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress sites using the Formcraft plugin. The ML classifier and ClamAV detection indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the presence of numerous links suggests a lure to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6357

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://hillcountryawningsandsunscreens.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072bc4966f9e---voxusodufugaluniva.pdf
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/da972fa748e34adc49dd9efc096e9af7/somojunopinojexazo.pdf
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160711377e6461---53246172333.pdf
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607dffa41eda1---72464028717.pdf
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0e008306f---70850898035.pdf
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/9dab91f6b8327f563fdeec13e5695a50/sitemifetojosep.pdf
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/nfrqskul79sn3ltota9jcli8qd/polunurokigogikusidorunon.pdf
    • http://apexhealthnutrition.com/newerac2c/userfiles/file/94933818712.pdf
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fce91a617d---vukatujotovosegupudijimi.pdf
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/ba6773c332982d7d7ff4a5a785dac358/5873471357.pdf
    • https://www.reflectionuk.com/wp-content/plugins/super-forms/uploads/php/files/abkfmp8haedma646biqfiuuah3/letatenamofase.pdf
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608321778ba4f---sodomavoduwaxilolizimuv.pdf
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/asvfhnit54v6egi5tuf121t9j5/nejajulafipuvufo.pdf
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/aobmllitijfdepd0r84sc3080i/nutaderujivufabo.pdf
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/3f140dcc8494015ef4ef92fced352ea8/73723617654.pdf
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608231dce5ada---32363727520.pdf
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/1d2nt753vkig9as711gch1ddorfb564j/suwofunizovemovirijagixi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=cervical+cancer+imaging+guidelines
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e181.bin
caf9c1fa72b4dac439614fecfd647a26e2dbe9dfa0ec952594dfdcbbd0be3a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE181 5036 bytes
font_01_sfnt_off0000f279.bin
0d774125fbd1d9a2a17b133650f6c1cf6ee650ad1e5343263330f2b5f3209c75		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF279 10424 bytes
font_02_sfnt_off000115dc.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115DC 4324 bytes

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