Malicious PDF — malware analysis report

Static analysis result for SHA-256 2008e7c4e5f9d544…

MALICIOUS

PDF

117.2 KB Created: 2021-09-06 00:05:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 95ddfc0c807aca73ea37b15ffbd62ef4 SHA-1: 388667210d0ffcb29b6860b995a80d588ca101f2 SHA-256: 2008e7c4e5f9d5446bd0a758eab481a9beb949242f3d55ee107025ad15c122ec
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. No scripts were extracted, but the PDF structure and URL analysis point to an attempt to leverage external resources for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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
  • 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://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e085bb75c8a---38956618019.pdf In PDF document text
    • http://www.alfapilates.pl/upload/file/ximebejoverazelizoxibikit.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b070a77d53e---wotumiwapekuzajole.pdfIn PDF document text
    • http://zcapitalcrm.com/app/webroot/uploads/files/fabujidunepubaxa.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/4391b3dd32a4cab8a990c4555543a20e/10559115268.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608194517d5ae---mituguvifukow.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfb37b2fa49---demijozemusiwuzib.pdfIn PDF document text
    • https://spbmworld.com/anaeter_capital/siteadmin/userfiles/files/pejidivadudunifutufozol.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/fetaxifoluxorag.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/rm5n91vu0cn6tp87ahti7uh5ov/81994500862.pdfIn PDF document text
    • http://grimastone.ru/files/kipadebivumos.pdfIn PDF document text
    • https://mttrasportisrl.it/dati/upload/file/degunojupipib.pdfIn PDF document text
    • http://cymrozgreatdanes.com/clients/1/1a/1a407d8ccac5525c71aaafb6b4664123/File/sojako.pdfIn PDF document text
    • http://studiotecnicobonoli.com/userfiles/files/nikidikapin.pdfIn PDF document text
    • http://businessplan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/39408183424.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16125c112ba7e2---gobugizivapejefixekus.pdfIn PDF document text
    • http://aygroupmuh.com/image/files/72887129792.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/6hqem7qfg00enq5s8a8obl3lve/18259029876.pdfIn PDF document text
    • https://deltarealestate-eg.com/userfiles/file/jilumetarakevatibom.pdfIn PDF document text
    • http://randalljroutson.com/clients/44711/File/27099574916.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=ummahatul+mukminin+pdfPDF 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_off00015a59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A59 10440 bytes
SHA-256: 5fc8bcaaf13372e1e554461b54a173afb5c7118cceac6590b3b8a65a8acdc6e3
font_01_sfnt_off000171b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171B9 23556 bytes
SHA-256: 653197ceb45edfb3266a0aaca4ad06a11dd046a4aa23c87950ae6a473b15b99c
font_02_sfnt_off0001af12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AF12 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.