PDF malware analysis — malicious · daf4dad329f209a3

MALICIOUS

PDF

74.6 KB Created: 2021-09-04 00:38:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: a181b24f3fc1d8945e74985c805edad4 SHA-1: 9f9ffbe22c57398699456dbc95aa46a41423d698 SHA-256: daf4dad329f209a3e123e80efdddb1a66e6b5e83488c9363e9e92a9786dae53d

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to other PDF files hosted on various domains, many of which are associated with compromised CMS uploads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with a link farm used to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

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://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160f2392146b43---15643427181.pdf In PDF document text
- https://free-spirit-city.eu/uploads/wysiwyg/files/bulifewajilumivituna.pdfIn PDF document text
- https://onlinendttraining.com/files/jimeziwakotizifarobemej.pdfIn PDF document text
- http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3e5d7d4552---74119666970.pdfIn PDF document text
- http://nedvizhimost-v-sharm-el-sheikhe.ru/uploads/files/49584608106.pdfIn PDF document text
- https://sedefartphotography.com/resimler/files/guponaj.pdfIn PDF document text
- https://nistd.in/userfiles/file/63397439871.pdfIn PDF document text
- http://baby-daycare.com/uploads/files/202108212128121934.pdfIn PDF document text
- http://thedreams.cz/files/dodirotejuxegizovu.pdfIn PDF document text
- https://sluganarodu.org/userfiles/files/vaxuveviwifidurub.pdfIn PDF document text
- http://liveisagenix.com/ckfinder/userfiles/files/73114085129.pdfIn PDF document text
- https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/9e52a2c4386b33ef6053de9a7aa5b56a/26233736785.pdfIn PDF document text
- http://pazarziraat.com/userfiles/file/womutawokipafe.pdfIn PDF document text
- http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16085f72a31df9---69543040093.pdfIn PDF document text
- http://kipia-nn.ru/userfiles/file/3186449739.pdfIn PDF document text
- https://doctornhospital.com/banglanews24/editorsfiles/files/46347708895.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160719091dd217---dakeguf.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=comercio+internacional+costa+rica+pdfPDF link annotation
- 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_off0000bc4f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBC4F	10812 bytes
SHA-256: `417aa08258ed722e9ba2cfb9649c8629d8de80cb9a952d631c2d2c4d4c91aa58`
`font_01_sfnt_off0000d536.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD536	18836 bytes
SHA-256: `f6239047fc43132080ffd4104c3ffa6fa1981b68b62790507a421c9962b79988`
`font_02_sfnt_off0001057a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1057A	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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