PDF malware analysis — malicious · 92f44d9349616bea

MALICIOUS

PDF

86.6 KB Created: 2021-08-31 04:01:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: f9e30bd4167e6df4fd93a40463140f2f SHA-1: 6785d31006e40fb8f0ec2c3f2b60d5fc7cec9635 SHA-256: 92f44d9349616bead81974d442d2e19c634ed1fcc1c96604cc6188e4be0a8e73

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous embedded URLs pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure indicate an attempt to distribute malware or conduct phishing attacks.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

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://wastran.ru/uplcv?utm_term=sure+5+odds+daily PDF link annotation
- http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076a90876d69---15743581835.pdfIn PDF document text
- http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bd2b781b091---50678425839.pdfIn PDF document text
- https://ntct-dz.com/ckfinder/userfiles/files/65545484127.pdfIn PDF document text
- https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/ac134f7cce7a5d6f58165fd94282e6c1/xajirub.pdfIn PDF document text
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079337a09bab---93658994575.pdfIn PDF document text
- http://ausafe.net/images/art/files/76218922280.pdfIn PDF document text
- https://glbtrader.com/userfiles/file/3451261262.pdfIn PDF document text
- https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608e1984cda6d---37405401744.pdfIn PDF document text
- https://tekmaker.com/upload/files/zamonupa.pdfIn PDF document text
- https://aihr-iadh.org/uploads/FCK_files/file/49980167902.pdfIn PDF document text
- http://kameleonhastanc.hu/files/file/mininuxasixetowilag.pdfIn PDF document text
- http://eotp.info/sites/default/files/fck/file/towesil.pdfIn PDF document text
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af6ee0dab50---6510930551.pdfIn PDF document text
- https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/3a52771b3921ca49d2e63f7a9a0a1185/rasejuful.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16073851f3198b---1771215418.pdfIn PDF document text
- http://dtcguild.org/clients/80367/File/43099238232.pdfIn PDF document text
- http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160bc0fb8d56d0---19367982398.pdfIn PDF document text
- https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/ea3e4de5fd1ea5f9f565a118a3585b3a/49556392439.pdfIn PDF document text
- http://pinetreerealty.ca/clients/55933/File/jikog.pdfIn PDF document text
- https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/44adfa86732e148c04f94c6e6feae08e/mofenip.pdfIn PDF document text
- http://tano-cable.com/d/files/muninezidufumifutedokozum.pdfIn PDF document text
- https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1606e59fdd8c63---10079232546.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_off0000eb96.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB96	19028 bytes
SHA-256: `d2b4c94672e73aadf99dd1a036af83a23a5e246c1df1a533b01d6b6c2898cc1d`
`font_01_sfnt_off00011cfa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11CFA	10464 bytes
SHA-256: `46a78eb06d86eca6bec359d723770f9eef053a2a86084aea83208c4adc0bc9c7`
`font_02_sfnt_off000134d7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x134D7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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