Malicious PDF — malware analysis report

Static analysis result for SHA-256 2060c80f34183cba…

MALICIOUS

PDF

89.5 KB Created: 2021-06-26 00:21:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d8769db5a0c78a20700d3550020a41dd SHA-1: fb2f58eefd9c2078c04754de74926d6c4bf3bdd7 SHA-256: 2060c80f34183cba969b3e58492ceeeb8a8f9feea3183c5b9ccee6131f737030
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 compromised WordPress sites, suggesting it's designed to lead users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the structure and URL analysis point to a link farm attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/pr0ei8lupm6rg9otgqbg09vkoc/xobidag.pdf
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfb85b0b893---bagufadegewinog.pdf
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/11085a60aef63ff63cd97c79fa5f3315/54450249658.pdf
    • http://solarissoft.com/img/userfiles/files/91669245310.pdf
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/fb66f9212accaaf2956a2c7cf225998c/zapivinutiw.pdf
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160917ab281057---bomubi.pdf
    • https://kermoulin.com/userfiles/file/kibapogelad.pdf
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c86021d3ecc---duzixusowunutakidiliku.pdf
    • https://almoheetmanpower.com/public_html/userfiles/file/97731327225.pdf
    • https://service-panev.com/userfiles/19903651598.pdf
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/09f0d0cae52d3315023aa9d76cf28c01/95974055394.pdf
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/88ee14777ab38970d7c711198385f68c/4660012359.pdf
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160969cae04759---nazesirovapoligugavujinu.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b928bbcb5ef---90214010795.pdf
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c981c37f14b---47527642306.pdf
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a44826a8e---10033327809.pdf
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077be7507f01---53130348656.pdf
    • http://atthaya.com/file_media/file_image/file/bavurisodujevamuxopotaluz.pdf
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a68b341f31---fatilosadenowiselojedusig.pdf
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c6117b31f08---31075172109.pdf
    • http://s8radziejowice-paszkow.pl/userfiles/file/11732801312.pdf
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f0cd74c993---38471962015.pdf
    • http://poorclarescork.ie/images/52030268017.pdf
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/bcea198b23b20e460ab02cbc8226c2a1/bikiwukumimewe.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=mp4+media+player+for+windows+10
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f890.bin
82217dcfa8a6b1c70637a4634c33d38c05966dc8ef5286626942300449c6c834		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF890 11008 bytes
font_01_sfnt_off00011234.bin
70cc42f95f5a680d6f179b21af827aac20b00e6e50bbce908e2b1faf8ad94533		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11234 17576 bytes
font_02_sfnt_off0001407f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1407F 16792 bytes

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