PDF malware analysis — malicious · 960f6ba6339952df

MALICIOUS

PDF

88.3 KB Created: 2021-06-30 21:19:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13

MD5: 6600dd03bbde740ff268c951906c17fd SHA-1: 047484c64098df39d156814bd6c099c60de603e9 SHA-256: 960f6ba6339952df56ca1c7a67ff2074f0578245fa0bc159f7c20adffa00748f

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to compromised WordPress upload storage and other disposable hosting sites, likely to distribute malware or facilitate phishing. The presence of a 'download button' lure further supports the attack pattern of tricking users into downloading a payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

Heuristics 7

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://nowator-zpu.pl/userfiles/file/pekonufuvemajunodugofoz.pdf In PDF document text
- https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/fa9f15957f1ca86cf8b69b422cda3a9b/zesukegawezap.pdfIn PDF document text
- https://ancoraeducacion.com/images/15817098728.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d5d975b8f5---31019609477.pdfIn PDF document text
- http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/f211097bf2b8e1be6fc6a8269d2df582/35642477318.pdfIn PDF document text
- https://gastrotest.co/ckfinder/userfiles/files/mofinogadej.pdfIn PDF document text
- https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/b273b03370bd8555b46acb38bdb714fa/tuluxalifasad.pdfIn PDF document text
- https://3drm.bg/uploads/pictures/files/5984509359.pdfIn PDF document text
- http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160ae8b37893ce---35097955908.pdfIn PDF document text
- http://tradeweb.es/userfiles/file/gevozokeduwefumixeset.pdfIn PDF document text
- https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1609d4e3493fec---25412834788.pdfIn PDF document text
- https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/f14c7e95ae2286d48cb41ccfcc0dbf13/7402635635.pdfIn PDF document text
- https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/1f3dd284420970083be2f27526ab00b2/fesudi.pdfIn PDF document text
- http://chargers68-50th.com/clients/3/3d/3dd154274af4887fbe356f6dcfc18689/File/nomubenesel.pdfIn PDF document text
- http://guerrazzi.info/userfiles/files/93925609537.pdfIn PDF document text
- http://noithatnhapkhaugiasi.com/luutru/files/xoruregeva.pdfIn PDF document text
- https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/4df4bbd990f558af9d0a3d25dac7f34b/jinamugolowafak.pdfIn PDF document text
- http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090d22ab3bd8---63529245538.pdfIn PDF document text
- https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/1726aac0cc4415f1cfc86c298b417ff4/19249948182.pdfIn PDF document text
- http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a11c2ce5c66---bewuxomeze.pdfIn PDF document text
- http://china-zzld.com/uploadfile/file///2021061905470192.pdfIn PDF document text
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/f284a2e1e32ad3737a463bef67a3d38b/vabawipowujudajijajenij.pdfIn PDF document text
- http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/7b3f693d58030559469d4e4495247564/2138860161.pdfIn PDF document text
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/9v1g7m9a4odloj9i4a5g2jvkd8/vasupezutub.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=homeopathic+pharmacy+mandal+and+mandal+pdf+free+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_off0000f3e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF3E5	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010bf7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10BF7	17644 bytes
SHA-256: `cff9e46eb96313cc00393b37596a6ca64244445f1a73094e0eb62635c0d6670e`
`font_02_sfnt_off00013a5f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13A5F	10908 bytes
SHA-256: `c1d632553c5bd8b403c1bb10988741b6d20c0d4489c586945a4731494e4502fb`

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