PDF malware analysis — malicious · 30c9a7a205c50dd4

MALICIOUS

PDF

90.3 KB Created: 2021-08-08 08:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 0e4bdeaded838297555ed296ec69da35 SHA-1: cef3f376402da33c679c71de8ce77a84161e3ffe SHA-256: 30c9a7a205c50dd4f5961316aae10162d8dbbc9f572fc102d273361b5bb99418

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised CMS upload directories and disposable hosting, suggesting a link farm used for phishing or malware distribution. The PDF structure itself does not contain readable content, but the heuristics indicate a malicious intent to redirect users to external, potentially compromised, sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9904

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://paitoonbox.com/userfiles/files/foxodedaromafosigomafune.pdf In PDF document text
- https://cesiedizioni.com/userfiles/file/puforewoma.pdfIn PDF document text
- http://austria-ex.com/images/blog//file/78677158114.pdfIn PDF document text
- https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/090339e7e92640b3d3097ff4193b285a/piwula.pdfIn PDF document text
- http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f8962465ca7---11545746394.pdfIn PDF document text
- http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d08a33feb8---nirasag.pdfIn PDF document text
- https://hse.tw/upload/file/51512256254.pdfIn PDF document text
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b0909fe2489---begipimemivuwowis.pdfIn PDF document text
- https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/qec5n25rlviv6l48943sstk524/89090150557.pdfIn PDF document text
- https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16072b8605d529---bavikukemit.pdfIn PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bd3c0fda1bf---butibuzuw.pdfIn PDF document text
- https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/ec480d70f1b03d0bd7918d54bffecbd4/nerurawokeresonuxarewot.pdfIn PDF document text
- https://xanbiente.de/userfiles/file/jidelaruwasejekujasa.pdfIn PDF document text
- https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/5208f51c698f4aca88c56d33034a1a52/nijijofi.pdfIn PDF document text
- http://alteredcompta.com/buddha/ckfinder/userfiles/files/dofodawuf.pdfIn PDF document text
- https://asiabiru.com/contents//files/80585307926.pdfIn PDF document text
- https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607de1feb4125---pigejusakorope.pdfIn PDF document text
- http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/f4d545e847aaca2ea1ffcb30a1d8cbb8/37924990775.pdfIn PDF document text
- https://cengilli.com/icerik_images/file/xujovomegowogasusalalawe.pdfIn PDF document text
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5822ec11c---xovugoxasafajibipufapa.pdfIn PDF document text
- https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/nnuorsb2c4fm45d6ahd666eesv/topenobokodopam.pdfIn PDF document text
- https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aab401cb79a---kumopari.pdfIn PDF document text
- http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be305c8f4ff---60949611211.pdfIn PDF document text
- https://giasusinhvien.net/upload/files/xozapafizipebiv.pdfIn PDF document text
- http://ecofincas.net/ckfinder/userfiles/files/vutojifewovaxifojo.pdfIn PDF document text
- https://alnahamgroup.com/userfiles/file/wefaledo.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=diferen%C3%A7a+entre+bact%C3%A9ria+gram+positiva+e+gran+negativaPDF 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_off0000f6b1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF6B1	11336 bytes
SHA-256: `b19d121d3efb1592c4b04ad1693205d19c47c8cb508f1c0f25847ce7f9140275`
`font_01_sfnt_off000110a7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x110A7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000128b9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x128B9	19796 bytes
SHA-256: `6dd0704ae5732e33a9bc49ac262ffc924b4550238f328b80918310fefd3faf61`

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