PDF malware analysis — malicious · fded946e38ffd241

MALICIOUS

PDF

76.8 KB Created: 2021-08-27 20:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 40c2f4ab0dcf486e29dac4861e9489f9 SHA-1: 1733f97cedddbefaa158e7340168154f385354f3 SHA-256: fded946e38ffd2412de1a3b37531b2e1a050e099230cb72340a0a39dbabeaf82

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan threat. It functions as a link farm, containing numerous embedded URLs that point to compromised WordPress sites and other disposable hosting. These links are likely intended to redirect users to malicious content or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 0.5565

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://philabc.ru/uplcv?utm_term=unexplained+fainting+is+associated+with PDF link annotation
- http://nhhs78.org/clients/63854/File/92025888548.pdfIn PDF document text
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f80acec8e8---17215228606.pdfIn PDF document text
- http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080eb881b2b8---11426451374.pdfIn PDF document text
- https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/5e043b08116b37f8a83d0dcab582344e/zeleli.pdfIn PDF document text
- https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/64a670356faee75ad569fe38919366ca/83100196971.pdfIn PDF document text
- https://burragebrothers.com/demo/jolie/beta/userfiles/files/xivub.pdfIn PDF document text
- http://kopdesign.nl/userfiles/file/suzepepuponirekiladanotem.pdfIn PDF document text
- https://www.sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/16090e804f0173---nudedotiganik.pdfIn PDF document text
- http://a-kamen.com/userfiles/file/63521953750.pdfIn PDF document text
- http://kondicionery-shodnya.ru/upload_picture/file/16713465453.pdfIn PDF document text
- http://goldenpoolandsauna.com/user_img/files/mejel.pdfIn PDF document text
- http://sportgalaktik.sk/userfiles/file/galufotuditapupo.pdfIn PDF document text
- https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608316c94331f---60259390628.pdfIn PDF document text
- https://dcoderesearch.com/uploads/3743699077.pdfIn PDF document text
- https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/1af64bb477fdc706e646d56c3c03ecc7/jelowifuk.pdfIn PDF document text
- https://editionsitaliques.com/userfiles/file/10730656583.pdfIn PDF document text
- https://topinsolventa.ro/userfiles/file/duvadiduwapito.pdfIn PDF document text
- https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1611e54d787c62---7927079620.pdfIn PDF document text
- http://2478.ru/admin/ckfinder/userfiles/files/94142707172.pdfIn PDF document text
- https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/7poi8t82ef0pstq8g1ed9lpjsd/21602841812.pdfIn PDF document text
- https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d5ef3b472---wikalojakatez.pdfIn PDF document text
- https://hostsolutions.ro/app/webroot/files/userfiles/files/97052816766.pdfIn PDF document text
- https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/e2a0ae3f1b4cf23a14a7be71ad2bd795/75834787337.pdfIn PDF document text
- https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/0c7d2d61fba3b87334f444b37001f70a/pizewala.pdfIn PDF document text
- http://logo4you.dk/userfiles/file/64039178390.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_off0000de09.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE09	17388 bytes
SHA-256: `301bd45d7d93597a197c83ecf4a6f78fdfb40c8c3c147bf23545fcac60a3d950`
`font_01_sfnt_off00010b75.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B75	10992 bytes
SHA-256: `210d1582753d03e382cfc28f6e6592a94f5008f1ed85c95c0d9d3f8d7bbcd946`

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