PDF malware analysis — malicious · ed8b905799bd84b2

MALICIOUS

PDF

80.3 KB Created: 2021-06-27 01:47:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27

MD5: 105c6ccbaad31a0d0697b0d620f82d45 SHA-1: 0e11ea1f330d17dd2fac3febed3106e24060b2a1 SHA-256: ed8b905799bd84b233dfeeaf464df1a0e28a9843e456393e4bd0b625856ea7e4

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to host malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.7385

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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
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://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/54453a0dddcf5e475bdefd748bd65bc5/mesuwivufejoxirowebe.pdf In PDF document text
- http://kaithompson.com/userfiles/file/vibowevasijamuteb.pdfIn PDF document text
- http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160738c672c254---wawitoxirowujesaxu.pdfIn PDF document text
- https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffd16d8288---debivofef.pdfIn PDF document text
- http://i-daa-wl.de/userfiles/nupinasujobavoxabuj.pdfIn PDF document text
- http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4b1a296e18---49436007439.pdfIn PDF document text
- http://al-bandak.com/userfiles/file/subujasumaboviliv.pdfIn PDF document text
- http://acecaalcoy.com/userfiles/file/86404542672.pdfIn PDF document text
- http://buddhavehicle.com/userfiles/file/38428068209.pdfIn PDF document text
- http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c5613bac153---nodugin.pdfIn PDF document text
- http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e144c04106---zefevapesezozux.pdfIn PDF document text
- https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b178da733---konolidimazopuwisuvo.pdfIn PDF document text
- https://notrepanierbio.ch/userfiles/file/womila.pdfIn PDF document text
- https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/94d2291f4b2baabe23c2d1643f53b025/mavadiwupirexogowudadezor.pdfIn PDF document text
- https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d000f694a3---43480562833.pdfIn PDF document text
- http://bebelino.ru/userfiles/file/fevenuxobivakolujomejut.pdfIn PDF document text
- http://llux.vn/uploads/files/96807759393.pdfIn PDF document text
- https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606f676147c37---jemumaxitokivujekir.pdfIn PDF document text
- https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/btvgv016dd6v573q2uj35s7i66/pexadezeve.pdfIn PDF document text
- https://too.kg/wp-content/plugins/super-forms/uploads/php/files/bd7f9136835610251ec54cd2509686c0/xovadi.pdfIn PDF document text
- http://thebellingerfamily.com/clients/0/05/05034faaa501c69409a7459485cba135/File/37081687244.pdfIn PDF document text
- http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/2nhdac2fevfuqljtbsqt2sfbmr/4905208995.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=future+extra+luv+mp3+free+downloadPDF link annotation
- 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_off0000da3d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA3D	17396 bytes
SHA-256: `068589d33d60a246d6547292b1a5028b6d2b86b73cf3e5a73aa3463edfaf9a3e`
`font_01_sfnt_off0001083f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1083F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00012056.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12056	10900 bytes
SHA-256: `2dc8e754c54a8c38bbddc1e1eb29c96e99bfefae06caaf891b2e5b4d7e78be2b`

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