PDF malware analysis — malicious · e790acdff9790272

MALICIOUS

PDF

85.8 KB Created: 2021-09-22 12:01:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: da97d1305b0d8e5e577847915c574f0a SHA-1: 703722158e41e8b34956914c7a5f374999ead7ba SHA-256: e790acdff979027268522b87c9878c7f27dba8c9c7f3339789b7577ae66704f3

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The PDF contains numerous links to external websites, many of which are hosted on compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the nature of the PDF and its embedded URLs strongly indicate an attempt to deliver a phishing lure or a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9905

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://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/03096596e5291a0582c3b5b4a3c14532/56962022093.pdf In PDF document text
- http://www.accl-calibration.com/login/ckfinder/userfiles/files/zodevulezi.pdfIn PDF document text
- https://foodsafebox.com/ckfinder/userfiles/files/wivolejafomebu.pdfIn PDF document text
- http://osayit.com/images/file/jatexipedi.pdfIn PDF document text
- https://immo-macedo.lu/userfiles/files/20156852231.pdfIn PDF document text
- http://sevvalturizm.com/rsm/files/refaxazuminuduboke.pdfIn PDF document text
- https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/vbugkd96amo0jia9sdceusde72/65972085364.pdfIn PDF document text
- http://tincorner.vn/uploads/files/44753488336.pdfIn PDF document text
- http://namadagaskare.ru/ckfinder/userfiles/files/tebejidejovituvab.pdfIn PDF document text
- https://misbahelmudii.org/ckfinder/userfiles/files/87304306236.pdfIn PDF document text
- http://ping-property.com/user_img/files/woweje.pdfIn PDF document text
- http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16143db029a1be---warazojadekifuwox.pdfIn PDF document text
- http://wirheiraten.de/images/file/68046777020.pdfIn PDF document text
- https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/161415d7ee599b---niwumonijemifugawasuj.pdfIn PDF document text
- https://perfectsextherapy.com/public_html/userfiles/file/fofalugubofegitubig.pdfIn PDF document text
- https://jamuiboe.com/webroot/upload_media/43641204991.pdfIn PDF document text
- http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614972a914969---32058757443.pdfIn PDF document text
- http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1613be1be55551---78724063520.pdfIn PDF document text
- https://angelsstaff.com/uploads/file/kexeserupa.pdfIn PDF document text
- http://csc0516.com/userfiles/file/20210904133218_mpes7b.pdfIn PDF document text
- http://varosom.hu/userfiles/files/fokasubinurepadalu.pdfIn PDF document text
- http://muasamhangmy.com/ckfinder/userfiles/files/43835636956.pdfIn PDF document text
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614936e6b55e1---buzaluvexosuzola.pdfIn PDF document text
- http://www.puhito.hu/uploads/dinipowoxepoju.pdfIn PDF document text
- https://villamishkan.com/310renonew/front/images/files/kewowaxexubiropuka.pdfIn PDF document text
- http://aitrans.cn/UploadFile/file/F1202109120406591821.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161493bfd5bb2d---rebanukagozenexo.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=the+renaissance+diet+2.0+pdf+downloadPDF 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_off0000e440.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE440	19492 bytes
SHA-256: `4a47814f4a33acbbc34b43bcb31c3c5af8f9c29c4c9ba2363f49613248674032`
`font_01_sfnt_off0001171f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1171F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00012f36.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12F36	11072 bytes
SHA-256: `94ccf1e4d1feb39a2b06ab0ccda9cd1f4582e1afc2608a9609b172dc9afc4736`

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