PDF malware analysis — malicious · 6be8c4ec00e9f334

MALICIOUS

PDF

89.4 KB Created: 2021-08-12 15:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07

MD5: 65092a41f5b93d1575cd69909c95a112 SHA-1: c5aa55141751457ca3b54470c792341fef0984b9 SHA-256: 6be8c4ec00e9f334cf9a7865a60866a89feb9f1f5cc553342a0bf78e7840bdac

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to multiple compromised websites hosted on potentially disposable infrastructure. The presence of external URIs and compromised CMS upload links suggests the PDF is used to redirect victims to malicious content, likely for phishing or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9913

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://philabc.ru/uplcv?utm_term=ross+geller+pivot PDF link annotation
- https://turismoporsantander.com/aym_image/files/fuwuvuditotutagis.pdfIn PDF document text
- http://weberstellen.ch/userfiles/file/xunesimudubujipisi.pdfIn PDF document text
- https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/tft2450mqothdmdplrq54sn8p2/fubijegipidozugevep.pdfIn PDF document text
- http://sh-ruiyangcpa.com/userfiles/file/2021-7///2021728513405819.pdfIn PDF document text
- https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160da2e0ca6e86---mepekuve.pdfIn PDF document text
- https://www.blondel-bois.fr/ckfinder/userfiles/files/6001212058.pdfIn PDF document text
- https://nguyenvanhuongloc.vn/app/webroot/files/images/pages/files/pawubat.pdfIn PDF document text
- http://sacoorhealth.pt/site/upload/file/9335768720.pdfIn PDF document text
- https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/80v50oi9745f6vi0jonk4vl1c1/farodori.pdfIn PDF document text
- https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4f7070862b---puzilujifejomi.pdfIn PDF document text
- https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/5f448f0775503883b7960ffa63e1fa20/75234351732.pdfIn PDF document text
- https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/05a0658c927ae2c55452fe0e333bf28b/75152490420.pdfIn PDF document text
- http://apnorajasthan.net/userfiles/file/9919633975.pdfIn PDF document text
- http://dolphinkorea.com/files/files/fipezugikobowewipu.pdfIn PDF document text
- http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba3cdd64f7f---81822927158.pdfIn PDF document text
- https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/9383756c325c8af245af688536698c25/74296070551.pdfIn PDF document text
- https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/16079d1afbdf42---kakofop.pdfIn PDF document text
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/1ho1j4ejqce5imqpsnih6810an/minuzupazokadilesim.pdfIn PDF document text
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b761064126c---vipifiviwosu.pdfIn PDF document text
- https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16079e1aea692c---74187860486.pdfIn PDF document text
- http://xdata.pl/app/webroot/img/ckf/files/jufumisewanixeforo.pdfIn PDF document text
- https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091287b86278---89744053542.pdfIn PDF document text
- http://fredericjean.net/oplusco/file/fabafulamamuxofozamuku.pdfIn PDF document text
- https://sgcaregiver.org/contents/files/xoroxumop.pdfIn PDF document text
- http://yuha.be/_files/file/58964133497.pdfIn PDF document text
- https://nisahanpin.com/calisma2/files/uploads/65540308470.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f7d5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF7D5	10272 bytes
SHA-256: `caf1003303d4ad44693aa5a01c56155700e47f6730b659015a068274b1a6963c`
`font_01_sfnt_off00010f15.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10F15	18796 bytes
SHA-256: `efe1edb693de9975396f2a3f5191135b0ba21de8e0ce2ba5b2a20dfcbb069f64`
`font_02_sfnt_off00013ec1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13EC1	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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