PDF malware analysis — malicious · e130076fdab5d072

MALICIOUS

PDF

78.1 KB Created: 2021-08-23 21:19:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 9a54d13100709004d09add3f1c7c8818 SHA-1: 32711e100527003df772eadf62330219f8d8525a SHA-256: e130076fdab5d0720fe6338cebf0616094649777ad358a96e4b812188333bdd6

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics and ClamAV as malicious, indicating it is likely a phishing or malware distribution lure. The presence of numerous external URIs and link farms suggests an attempt to redirect the user to compromised or malicious websites. The document body is heavily obfuscated and appears to be generated content rather than user-readable text, further supporting a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.8590

Heuristics 5

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
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://infrive.ru/uplcv?utm_term=dolemite+is+my+name+film PDF link annotation
- https://bodzlomu.com/userfiles/file/41432116863.pdfIn PDF document text
- http://eska-lift.ru/userfiles/file/fesuna.pdfIn PDF document text
- https://afayl.com/userfiles/file/2037382665.pdfIn PDF document text
- https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/o1j124mmgv2ni9dupi20s38bhr/49089741237.pdfIn PDF document text
- http://playfromhome.org/clients/4/49/49939bf6a151252ba1adfe53d1befa29/File/melibipusemovokuxaxijaxo.pdfIn PDF document text
- http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/65ocq4o73vg5i0p3jm3vb900f3/deteju.pdfIn PDF document text
- https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/8167e3b4b0c0f970dfdd22d8959019bd/97415063531.pdfIn PDF document text
- https://martensmgt.com/business_school/uploads/file/6080825203.pdfIn PDF document text
- https://stiff.pl/ckfinder/userfiles/files/2624143919.pdfIn PDF document text
- https://editions-tlp.fr/ckfinder/userfiles/files/96603018692.pdfIn PDF document text
- https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3dc290479---jigulipixutesajolajod.pdfIn PDF document text
- http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/160829aa38e98e---lutakixu.pdfIn PDF document text
- https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/6db383a3d6990d2a276d8051dd5538b0/kukunuboruf.pdfIn PDF document text
- http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/bc78d6feb07a54a7ffc82419d9317a41/33540242558.pdfIn PDF document text
- http://gioiacompany.net/images/upload/file/57678931875.pdfIn PDF document text
- http://capitalclassof1970.com/clients/e/e7/e78cae7b17622b0161c193cbd63f4fd0/File/muduxerodamifudaladufoj.pdfIn PDF document text
- http://almar-bus.pl/userfiles/file/83245112318.pdfIn PDF document text
- http://gro-felix.si/uploads/59238714746.pdfIn PDF document text
- https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/64a61d5a92aede78eeb01c6db32561f1/sutewatadobiwepanu.pdfIn PDF document text
- http://kencert.vn/uploads/image/files/zibiletuzigi.pdfIn PDF document text
- http://rrarental.org/upload/file/votefugonoro.pdfIn PDF document text
- http://files.ibiza-ferien.de/file/rimuxuwajotafaki.pdfIn PDF document text
- http://anhuizpyy.com/upload_fck/file/2021-5-4/20210504013440100496.pdfIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ec92.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC92	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000104a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104A4	17556 bytes
SHA-256: `9c18d2a5a13848c06dcae3326b296f19669589a35755ff3d9d68ff389b0ba590`

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