PDF malware analysis — malicious · b3e9768baddb648d

MALICIOUS

PDF

84.8 KB Created: 2021-09-08 07:56:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: d3eb814babf53c946f6bca238d9de136 SHA-1: ce5614344f4afc92f510ee0da6a417a77f972951 SHA-256: b3e9768baddb648d279cf38c1c2ecea08ef3d1efb4c122ca2e32b3a3bd9b1f58

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs that form a link farm, likely intended to redirect users to phishing sites or download further malware. The presence of these links and the overall structure suggest a phishing or malware distribution campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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://coretry.ru/uplcv?utm_term=addictive+behavior+questionnaire+pdf PDF link annotation
- http://wignaccent.com/FCKeditor_2.6.3/userimages/file/20210701134925.pdfIn PDF document text
- http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160a97ac5e3c08---kenegolitupisara.pdfIn PDF document text
- http://cmtsport.com/pliki/99155191845.pdfIn PDF document text
- http://zkojicin.cz/userfiles/file/93605053660.pdfIn PDF document text
- http://efuturesthai.com/uploads/files/12698146323.pdfIn PDF document text
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16087163cdca26---33203199700.pdfIn PDF document text
- https://restavracia02.com/userfiles/file/didufokazixuwedo.pdfIn PDF document text
- https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/e8284c5227536539bbe6b891c6157c37/togevagejisovudaregaxe.pdfIn PDF document text
- http://maslatalaia.com/userfiles/file/gisavimobipekodenodoxeme.pdfIn PDF document text
- https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609daa7ed1f84---danamepopogowemixufel.pdfIn PDF document text
- http://fantalife.nl/userfiles/file/zesepikupexowetagugo.pdfIn PDF document text
- http://csc0731.com/userfiles/file/20210615205428_kp6434.pdfIn PDF document text
- http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160780c47d5051---12150933919.pdfIn PDF document text
- http://akkoryazilim.com/userfiles/file/limorekemisil.pdfIn PDF document text
- http://worldcar.jp/userfiles/files/loribitudid.pdfIn PDF document text
- https://www.groupenahno.com/wp-content/plugins/super-forms/uploads/php/files/kt50ei25kp3qgg4c7pjd3j3juh/vefefalevazabidos.pdfIn PDF document text
- http://bjeclinic.com/ckfinder/userfiles/files/73328075061.pdfIn PDF document text
- https://too.kg/wp-content/plugins/super-forms/uploads/php/files/6bfb01fcd60eb90bab23df4a80d08fd1/22751660027.pdfIn PDF document text
- https://agentcctv.com/userfiles/file/20546465383.pdfIn PDF document text
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609faa09d16f3---61955607527.pdfIn PDF document text
- https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/30121ec6ad5547f6f45d1b73f01a2226/rijokewegadewewenuwiw.pdfIn PDF document text
- http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/qvnfg7af3h3pqbnf5n4bvvth25/posiwinazote.pdfIn PDF document text
- http://chemonova.com/FCKeditor/file/49339897119.pdfIn PDF document text
- http://studiogallerani.it/userfiles/files/kolosufozajowesam.pdfIn PDF document text
- https://yepsell.com/userfiles/files/70662001892.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_off0000e25a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE25A	19068 bytes
SHA-256: `d5c6a05ef645cc9feb98a4f7b1360d0bcd00e62d0e8b16568e5adedb645ad667`
`font_01_sfnt_off000113f7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x113F7	11104 bytes
SHA-256: `ca62553878d552781ff5c5475ee4f05a20fed698847f20e469ca3e264f2c3b4b`
`font_02_sfnt_off00012d75.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12D75	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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