PDF malware analysis — malicious · 951697c2db1ecad2

MALICIOUS

PDF

94.7 KB Created: 2021-09-06 08:22:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 8477f1e4a0ac5f466007ff26ef2e1792 SHA-1: ecadc87867e19b452fc5877e369609c082fa9f1e SHA-256: 951697c2db1ecad2614afa5066ed66a2896f972ab602aa2ca01b39cd804859ec

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which appear to be hosted on compromised WordPress installations or disposable domains, suggesting a phishing or malware distribution campaign. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports this, pointing to a link farm designed to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9897

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://garglob.ru/uplcv?utm_term=business+plan+makanan+pdf PDF link annotation
- http://olneyjune65.com/clients/d/dc/dcef5d22f85ec69f5810ba62c2e8cf46/File/28360935110.pdfIn PDF document text
- https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/bh5cvlu9vk5sunsldd9chu5af0/wirituvokudanot.pdfIn PDF document text
- http://coral-travel66.ru/admin/ckfinder/userfiles/files/jarotadi.pdfIn PDF document text
- https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/9al1m0cdtd0q9s4cok1cg6ndfs/nulujexivukonerajawosoma.pdfIn PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/5c2knkv5fbnop15g7i0470vl31/35748521395.pdfIn PDF document text
- http://arisutour.com/ckupload/files/xezefuvozabifitotejate.pdfIn PDF document text
- http://gayaarchi.com/userfiles/file/20210808232905.pdfIn PDF document text
- http://bowlingkillers.com/imgdb/files/40721696934.pdfIn PDF document text
- http://mpu-beratung-brendle.de/userfiles/file/gamuvuguratud.pdfIn PDF document text
- https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/9771c1f303ae5c0f93e41a19b3ca6cb1/20506150669.pdfIn PDF document text
- http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/j934bpan6enuo12c8calv5off1/mubovafexuwi.pdfIn PDF document text
- https://myvideoclasses.com/ci/userfiles/files/87251381622.pdfIn PDF document text
- http://choinka4x4.org/cms/files/file/jomese.pdfIn PDF document text
- http://china-guolin.com/filespath/files/20210901231459.pdfIn PDF document text
- https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/4d6f907f49134faaf3058287967d1f82/pejin.pdfIn PDF document text
- https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160920f34140e9---44247505715.pdfIn PDF document text
- http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079dbfada291---gokib.pdfIn PDF document text
- http://bsp-oblspl.org/ckfinder/userfiles/files/46034896236.pdfIn PDF document text
- http://vanprodukt.cz/UserFiles/File/lumal.pdfIn PDF document text
- http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf41c2db921---17207073333.pdfIn PDF document text
- https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/12c6052f8881e3b2c9bfd418ae8c62da/64390401989.pdfIn PDF document text
- http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4de3b23d75---60277415591.pdfIn PDF document text
- http://thompsonhigh1980.com/clients/4/48/48b9e10b24f1ac3c627dfd5bb8c45987/File/kosizumepixilobudegu.pdfIn PDF document text
- http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160796e203c08e---91224273078.pdfIn PDF document text
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/84140d3487237a18df154f509396c8bc/napirekerovukogalufafe.pdfIn PDF document text
- http://pileshoppen.dk/userfiles/file/30635461412.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_off00010ae9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10AE9	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00012300.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12300	10584 bytes
SHA-256: `ab55cb7472f40e0705c2663a467c6378c9ebed1013fc89ed203656a37ad4812e`
`font_02_sfnt_off00013b1a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13B1A	19200 bytes
SHA-256: `c392fc83774ad1b5a46c2d3d4f3eaab6255743182b8bd55f1b53b7922930a9f6`

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