Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f670701cb05fe8e…

MALICIOUS

PDF

99.4 KB Created: 2021-07-23 18:44:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: d1d77acac066e7aa9eeee2f8e7d3f516 SHA-1: f6d22a911cebb909c2136ca864272ed99b1e900a SHA-256: 6f670701cb05fe8e9a1f67a125cf7fe4f18f24ffe148c993e5c64eb1ff4afdab
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to compromised WordPress sites and other disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://bethtikvahevents.ca/clients/2/20/20a91c0cb94b02964b0d1c5d980f1596/File/zuzowuvokigin.pdf In PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4e85e7d787---kotegukezufi.pdfIn PDF document text
    • https://gulf-rope.com/images/bulk_images/files/89283619358.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098ae094f101---42456448244.pdfIn PDF document text
    • https://efficimm.fr/userfiles/files/lezozurosewem.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/f5db5669b169ed864b7e42127baf9ea2/makelurewolonilek.pdfIn PDF document text
    • http://starlightcelebre.org/clients/4/43/43e9139217482d7666ce300faf566241/File/51595157454.pdfIn PDF document text
    • https://winpoasia.com/ckfinder/userfiles/files/wujetati.pdfIn PDF document text
    • https://mimpishio2bet.com/contents//files/janod.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/16902635fd4019880ad4825281e6e4b4/zovapowasokojubuzuzuja.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160909ac9eedae---godegasepag.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/16086efe027b5f---30751218652.pdfIn PDF document text
    • http://emke.hu/uploads/ckfinder/userfiles/files/45989865801.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16092e62b25fbd---vazisi.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/bozenuki.pdfIn PDF document text
    • http://meijialx.com/ckfinder/userfiles/files/raredazu.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/n6q8g1fil01dp84aucnl4v20e6/16138425348.pdfIn PDF document text
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073ef81ead07---70774980178.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/cdtnv3hcdvn427q4h76k31m3n7/79307204701.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160be14b778a63---48213360523.pdfIn PDF document text
    • https://oklogistic.lv/upload/file/63612524685.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ebd8ba7235---90903650906.pdfIn PDF document text
    • https://zivotzaokny.eu/res/file/64821705260.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=is+piggy+the+protagonist+in+lord+of+the+fliesPDF 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_off000121b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121B5 17052 bytes
SHA-256: 0c59917dda419863897052715f759b86a94f22de5f12275aa634b1d216f45e2c
font_01_sfnt_off00014e60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E60 10844 bytes
SHA-256: da94b14094378db62fe8e2350dc1030ededd3c38fccf898d549aabc24daeb96b
font_02_sfnt_off00016726.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16726 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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