PDF malware analysis — malicious · a2c5dfc58fecc468

MALICIOUS

PDF

72.9 KB Created: 2021-09-06 18:38:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 9e8c010a18c646f7aecfe096aed2dd74 SHA-1: d252b620f2b25f21ab432318090b6f85fe2f94c8 SHA-256: a2c5dfc58fecc468488065b710ec270c4b23a51aace5b7a3fbdcc3d5058819f2

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall detection indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9915

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://catamma.ru/uplcv?utm_term=hq+marvel+pdf+ingles PDF link annotation
- https://abhimaninteriors.com/ckfinder/userfiles/files/1640370837.pdfIn PDF document text
- http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb77e872e76---29189055293.pdfIn PDF document text
- http://salwex.hu/file/20268506877.pdfIn PDF document text
- http://www.cenlajobinator.com/siteuploads/editorimg/file/ropekew.pdfIn PDF document text
- http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608738f1850f1---3010479841.pdfIn PDF document text
- http://viajesalaos.com/webroot/img/files/96101619970.pdfIn PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c03526667a9---xosubiwodode.pdfIn PDF document text
- https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acdb6e29bc6---77955366540.pdfIn PDF document text
- https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/96cc0aa52ed077362d28c95e86e976c5/46111103740.pdfIn PDF document text
- http://cuacuongiare.vn/upload/files/jemanolapom.pdfIn PDF document text
- https://www.nickelmarket.co.za/includes/ckfinder/userfiles/files/sawarodedemurorawa.pdfIn PDF document text
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f48dce41b01---pigajika.pdfIn PDF document text
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fc2cded7a86---josegabedajepun.pdfIn PDF document text
- http://haiqi-machine.com/d/files/lisaxiguzupogur.pdfIn PDF document text
- https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608369f711bb5---17565519868.pdfIn PDF document text
- http://allasclub.com/campannas/file/66839910715.pdfIn PDF document text
- http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095dc6b5b05d---49559774149.pdfIn PDF document text
- http://escqatar.com/uploads/userfiles/file/file/16888407390.pdfIn PDF document text
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/62426578b4d89877584fe8f7090b83fb/ludegonu.pdfIn PDF document text
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/c4ce9e470a8b0dfc02113fece8184af9/gotojakawilabigezon.pdfIn PDF document text
- https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c33a74c462a---12546166162.pdfIn PDF document text
- http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/7288b27cd054acf021a1a59a9b4e5561/gedugulujoz.pdfIn PDF document text
- https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/acb3158eb4a323acaae9fe7114fc3e0d/71335206782.pdfIn PDF document text
- https://iguanapools.com.au/wp-content/plugins/super-forms/uploads/php/files/5ltbi068bjtoajlceiba0oght5/73961641458.pdfIn PDF document text
- http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611d7f9dcb130---64543458731.pdfIn PDF document text
- https://samirkumarpaul.com/ckfinder/userfiles/files/dudizafopudolonamigijuwa.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_off0000bcda.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBCDA	15952 bytes
SHA-256: `658f1cabcb9ce3110275bd1858ccd9b49ae28979505dfeb57bfd150adfca0814`
`font_01_sfnt_off0000e56f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE56F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000fd86.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD86	10824 bytes
SHA-256: `8a467bce784cb4dbdd571e8a5984e555d09c3612475e380428281877bc3b5dbe`

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