Malicious PDF — malware analysis report

Static analysis result for SHA-256 180557c3d66b0f02…

MALICIOUS

PDF

82.5 KB Created: 2021-09-08 11:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 61dd6ab0ee10b962bb131f3b73581ab9 SHA-1: ffe1fc6cbf436b10f8c571ea13f8c23b59cdbaf7 SHA-256: 180557c3d66b0f025b415a5270f8461c480e2a708f53e6a8f5d3e4d2ee181da5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to compromised WordPress sites, 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 structure and URL patterns are consistent with a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://pistant.ru/uplcv?utm_term=profiss%C3%B5es+em+ingl%C3%AAs+exerc%C3%ADcios+pdf PDF link annotation
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16085cb06d89d3---madorigunuvenatiribiz.pdfIn PDF document text
    • https://thuaphatlaihanoi.net/uploads/files/84345765882.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b18b6dc807---donoxekagari.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5fc7239e75---18403457159.pdfIn PDF document text
    • http://maymaygiaydachidang.com/upload/files/6564282321.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/g3jv0p9tn5ubcdptilijudu255/25944349703.pdfIn PDF document text
    • http://nagymester.com/userfiles/file/15653803521.pdfIn PDF document text
    • https://esportenerd.com/app/webroot/ckfinder/userfiles/files/66797581080.pdfIn PDF document text
    • http://minerva-collection.net/files/files/11456653897.pdfIn PDF document text
    • https://fonixkoncert.hu/upload/file/28166630022.pdfIn PDF document text
    • http://henghuitong.com/jingkelun/userfiles/files/20210709073533.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/wijezeb.pdfIn PDF document text
    • http://blissworldbeauty.com/newerac2c/userfiles/file/72026869925.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/806034461d337d55fe148b7b77e0409a/dejewapawukebuz.pdfIn PDF document text
    • https://pensiuneavlasin.ro/wp-content/plugins/super-forms/uploads/php/files/tgaojiudkdst1je938ifcqcmfu/joxujadunajola.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609756329f890---lewozupe.pdfIn PDF document text
    • http://wajl.net/img/file/202171162858.pdfIn PDF document text
    • https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072225e01a20---25032635989.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fbd61368e0---25545912685.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/0ad993966d4e41ede3a04980f4187b1b/18807876905.pdfIn PDF document text
    • https://rt9.rspo.org/ckfinder/userfiles/files/wevusoraliz.pdfIn PDF document text
    • 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_off0000d7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A8 11252 bytes
SHA-256: 2282fb9a3607109dff8a884b4826e42e6b7e0c32bd7dc92d210485a02483b3cd
font_01_sfnt_off0000f131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF131 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10943 20048 bytes
SHA-256: e7a2209467ff908d95dfab11544388f91b35774746256a8d8755ecdfe28e97ce

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