Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eacfd61bb91c3ac…

MALICIOUS

PDF

85.2 KB Created: 2021-08-17 03:44:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 61798245ab558607b94cac76828ec7b1 SHA-1: 9a8f9fb3ef6e8da2fb2a7fa2429ab1765a03ae44 SHA-256: 1eacfd61bb91c3ace29ca861f28fb71fbc20f66027e6e787f2f784d2f5bbd9f6
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://esoftland.com/userfiles/file/merifov.pdf In PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/76fbc9a159603d0e8a7ed0e832863fd6/jomozobasixezesiki.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/aa7c889b0dca20f38f17bd67f2f5dccf/zukofozozivamit.pdfIn PDF document text
    • http://boracayg.com/FileData/ckfinder/files/20210706_5E81A1DAD2838E0A.pdfIn PDF document text
    • http://dui-antidote.net/images/userfiles/file/xupasekarojefubufufonesut.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/ae24fc7443be0dda64fe0a8a06d14a3a/52552556138.pdfIn PDF document text
    • http://aiken7050.com/clients/5/51/510ae66c864a6d23552e02d1b5190e2c/File/26430756243.pdfIn PDF document text
    • http://aaaexpressac.com/userfiles/file/benisufixatepusuporez.pdfIn PDF document text
    • http://gocchame.vn/app/webroot/img/uploads/files/53934139002.pdfIn PDF document text
    • https://allegypttours.net/userfiles/files/vepolajizupe.pdfIn PDF document text
    • https://visionbrindes.com/admin/fckeditor/userfiles/file/38076691830.pdfIn PDF document text
    • https://sgpropertylawyers.com/wp-content/plugins/super-forms/uploads/php/files/d0fa5542dd5b5591ae1dfea2bab0abd1/40486925165.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/6a1b4ce9a54f27df665f4c2e7cd806da/22798972504.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ab7d6696e6b---vomasukugowofag.pdfIn PDF document text
    • https://muratay.nl/userfiles/file/41887860955.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/2a583708dedeac51bc9e87aaa10d00ff/lesurutisatefuxeganaj.pdfIn PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/g73u1q5n9gc88cin46ieclee70/ridon.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af5cbedeafc---34424085630.pdfIn PDF document text
    • http://mp-hd.de/data/aktualnosci_imgs/file/nitanaku.pdfIn PDF document text
    • http://amoy-art.com/Upload/file/9011948942.pdfIn PDF document text
    • http://kondicionery-krasnogorsk.ru/upload_picture/file/kamefefabafavufodinat.pdfIn PDF document text
    • http://wu-pao.com/upfiles/editor/files/vigogurilupanewubar.pdfIn PDF document text
    • https://sieompaysdebray.fr/lesiom/txt/imgadmin/file/zuzokibom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=google+translate+ios+appPDF 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_off0000e9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BD 17372 bytes
SHA-256: ae631e0a2fd4906debe7cc268044739063ad878f3a2d5724e422d9e9c76fef15
font_01_sfnt_off0001169a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1169A 10468 bytes
SHA-256: 4b3d6b762226d307595623661b6e8fd10288dd1512ec02969fe334ea5948fde4
font_02_sfnt_off00012e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E86 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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