PDF malware analysis — malicious · f48af2c4f75bb492

MALICIOUS

PDF

82.7 KB Created: 2021-08-09 23:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: a79eef539a9d6dfee6e33fa91b64bd77 SHA-1: 8fc16d97b939b4ded769b9ac5ae41589729f9c1d SHA-256: f48af2c4f75bb4925cd8565833209c6de7292be56a5681e88b6b2396bea8b5ac

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document functions as a link farm, directing users to numerous compromised websites and disposable hosting domains. The primary intent appears to be phishing or directing users to malicious content through these embedded links.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

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 http://proreferee.ru/uploads/ckfinder/files/88354997161.pdf In PDF document text
- https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/obko4r21c6o8k4s9efo4153kjc/65674040104.pdfIn PDF document text
- http://macabrey-luthier.fr/data/Files/18800844977.pdfIn PDF document text
- http://a-b-i-s.net/layout/bilder/file/2394609441.pdfIn PDF document text
- https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/9ede99de85fe42b21a03b6a028cf5e98/dolepedirixamutipoxat.pdfIn PDF document text
- http://provia-events.de/pics/fotos/1/file/lezovileladuz.pdfIn PDF document text
- https://nestaerospace.com/uploads/file/mofujojosuwijevefuzur.pdfIn PDF document text
- http://wonderful-foods.net/userfiles/file/vifipav.pdfIn PDF document text
- https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/7ec619caa098213c22ec383d14868aa4/87776483131.pdfIn PDF document text
- https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/39415284984ef6f210e5034b3fa86981/57937788302.pdfIn PDF document text
- http://reszke.pl/fckeditor/editor/filemanager/connectors/php/file/nujatobavafipokadezegi.pdfIn PDF document text
- https://laplacedesstores.com/upload/file/sosurutipenaruvanu.pdfIn PDF document text
- http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b1e6681e8a6---sazufas.pdfIn PDF document text
- http://amsasecretariat.fr/userfiles/file/fefotisilos.pdfIn PDF document text
- http://suamayin.biz/userfiles/file/2187864566.pdfIn PDF document text
- https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/4d3df84304653ec941451294132a8d27/59986030583.pdfIn PDF document text
- http://5m-tti.com/uploads/image/files/desegibugunijigenovasa.pdfIn PDF document text
- https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/662o3jkj34j49hk5e39fsbifn4/remolimibure.pdfIn PDF document text
- http://ilovegabal.net/fckeditor/_upload/file/10739663993.pdfIn PDF document text
- http://veivel.com/userfiles/file/kojekisoxawitatower.pdfIn PDF document text
- http://quangcongluc.com/upload/files/detazek.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608c519bb51d0---pudoze.pdfIn PDF document text
- https://rainbowfurnitures.com/files/files/mezapufizowunateveperuxob.pdfIn PDF document text
- https://accuratesearch.com/userfiles/file/tikojuroxebafutusolunajo.pdfIn PDF document text
- http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070af4a70c27---33615300783.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=how+do+i+create+my+own+corporationPDF 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_off0000e060.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE060	10652 bytes
SHA-256: `df4fd3ba5dd466606a5f4917daae9c3b92aaf8182f686b975bb169eb59479f0d`
`font_01_sfnt_off0000f8bc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8BC	16820 bytes
SHA-256: `02b4267b0c8765773bbd8cf74b16b3d2c32b37f6b11eb371da66e84b61511755`
`font_02_sfnt_off000124cb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x124CB	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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