PDF malware analysis — malicious · e3a0675956dd0d55

MALICIOUS

PDF

84.9 KB Created: 2021-08-08 21:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: badb86453652f6fdd7306c08a8346df0 SHA-1: 2274fe358628b35ffe4f65040eb9ef2de4e85d0f SHA-256: e3a0675956dd0d5538b7f85612c524d4d16de3b11bf54adb13dba55be71ee026

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised websites, specifically leveraging WordPress plugin vulnerabilities for file hosting. The primary URL suggests a lure related to 'fortnite cracked accounts combo list', indicating a phishing or credential harvesting attempt. ClamAV detection and ML classification strongly indicate malicious intent, likely involving the exploitation of PDF vulnerabilities to redirect users.

Machine Learning

Nyx PDF Classifier malicious score 0.9914

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 https://allytemp.ru/uplcv?utm_term=fortnite+cracked+accounts+combo+list PDF link annotation
- http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e1853ad4cf---92362118800.pdfIn PDF document text
- https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160cebc5e10b88---56199364515.pdfIn PDF document text
- http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/egf1maf0m0urm0f6hdb0np57nc/29251561959.pdfIn PDF document text
- https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16085cfae4a277---41787845515.pdfIn PDF document text
- http://vinacafe-dalat.com/Images_upload/files/jezineju.pdfIn PDF document text
- https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/5339bf29f9d3bce4cddf4dfad199206e/95794974151.pdfIn PDF document text
- https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/d95ce9bbd85711d0260b903bed631d16/vodawunizobolutususe.pdfIn PDF document text
- http://portaldo.eu/contenuti/upload/file/xufenojuzozexalakibaja.pdfIn PDF document text
- https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a31934bafc7---rafafeposunomigutiduk.pdfIn PDF document text
- http://greenmodels.ru/uploads/files/rawexopereno.pdfIn PDF document text
- http://aitrans.org/UploadFile/file/F1202106160010193765.pdfIn PDF document text
- http://boek.se/bilder_umeny/File/tamerevotebo.pdfIn PDF document text
- http://esipro.fr/userfiles/file/gufojepiriwoxemax.pdfIn PDF document text
- http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160f913f93008c---76003572544.pdfIn PDF document text
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f7f2f4d769---fofap.pdfIn PDF document text
- https://pnlcoach.com/misc2/file/In PDF document text
- https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/ef563efb66e9acf68aebfcb05e3c93c7/45001693932.pdfIn PDF document text
- http://gintaras.cz/userfiles/file/losijubuxupegopimiwilur.pdfIn PDF document text
- https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16077481b8f3c7---88112175275.pdfIn PDF document text
- https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/r1pvg82cdk1hb7kdbof8dvn78m/90689874341.pdfIn PDF document text
- https://dailyhondaotomientay.com/upload/files/mekomixunometa.pdfIn PDF document text
- https://ringid.vn/ckfinder/userfiles/files/xetevetelifijodevak.pdfIn PDF document text
- http://instant-image.net/UserFiles/Site/File/25583103146.pdfIn PDF document text
- http://twfbs.com/ckfinder/userfiles/files/49003248899.pdfIn PDF document text
- http://aven.su/userfiles/file/nemizevinegijigijemavotoj.pdfIn PDF document text
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/mffhvfrn0eeudtuqb7r7fbauv5/41002735263.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000cc67.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCC67	17024 bytes
SHA-256: `c66b97cca956b852c2171b35cb920ef646c44e6e54f427162b9757180f15a296`
`font_01_sfnt_off0000e3ed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE3ED	10840 bytes
SHA-256: `14d265fe63380b160cdbeb6292ea5c72316a08646f9f1bdf2dc66633ff390458`
`font_02_sfnt_off0000fce5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFCE5	18008 bytes
SHA-256: `9caea39049e197d9a2de62d4f7caa1c6a4feb0708615d3bf6904643a485ed49e`
`font_03_sfnt_off00012c7a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12C7A	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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