PDF malware analysis — malicious · c5605edb30c706d9

MALICIOUS

PDF

74.0 KB Created: 2021-09-01 05:42:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 0c3b1b12d17b326fb33af726bb3d2da5 SHA-1: 30a2cadce63adef98a28078f05cfd9310ab41f02 SHA-256: c5605edb30c706d9860ff213b4a8fabf22d99ae52bc1ee5f5996c3f39916d4a3

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 flagged by an ML classifier. It functions as a link farm, containing numerous URLs that point to compromised CMS upload directories and disposable hosting. These links likely serve to redirect users to malicious content or phishing sites, potentially leading to further exploitation.

Machine Learning

Nyx PDF Classifier malicious score 0.5474

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 http://dansensvenner.dk/imagesfile///lewanufaviri.pdf In PDF document text
- https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/88c53746a42e7ec3eb298aedc28c52c8/juvenuwigokup.pdfIn PDF document text
- http://brkvinc.com/userfiles/file/39336843773.pdfIn PDF document text
- http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16070527072f41---78394532447.pdfIn PDF document text
- http://xn--365-pn7mwb654m2qn.com/ckupload/files/81140330120.pdfIn PDF document text
- http://engroupe.ca/aym_image/files/keteto.pdfIn PDF document text
- http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ba2939bb1e---kesabidoxukoxefesen.pdfIn PDF document text
- https://108pizza.pl/uploads/userfiles/files/jupijiziredutixar.pdfIn PDF document text
- https://driftwoodcc.com/userfiles/files/gufamukepegagopobeniwavi.pdfIn PDF document text
- http://doktor-okonski.pl/uploadimg/file/biwejafedifezanavomeme.pdfIn PDF document text
- https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/44427f97173613a446d681ae3ae459b5/39340386466.pdfIn PDF document text
- https://ukmriptek.org/codeIgniter-hmvc/userfiles/files/83619253109.pdfIn PDF document text
- http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/bn1890kgeg446l4q8c4gekm010/duxexawumalosaj.pdfIn PDF document text
- http://charivne.info/images/file/83464777562.pdfIn PDF document text
- http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160c962a66b043---jerom.pdfIn PDF document text
- http://www.swaving-stalinrichting.nl/ckfinder/userfiles/files/tetin.pdfIn PDF document text
- https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/f3acedb1b6bf425d35ceeb765788c1a4/dizaraxixezipefupibibuju.pdfIn PDF document text
- http://mashhadgardi724.ir/basefile/mashhadgardi724/files/fixegogiwek.pdfIn PDF document text
- http://articolo17.it/siti//usr/foto/files/vejixovi.pdfIn PDF document text
- http://cn-junsheng.com/upload/file///2021820185097248.pdfIn PDF document text
- https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/b14e5628ea1ea32c281c9cbca1f49b66/54232548481.pdfIn PDF document text
- http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cddaccf244---32184044729.pdfIn PDF document text
- http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/c2a2e90503a210a1aa4d4590111e01ec/wonenutaberejudabefozo.pdfIn PDF document text
- http://pantanalmsnews.com.br/ckfinder/userfiles/files/bimaxiropisuxixoguni.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=properties+of+multiplication+lesson+planPDF link annotation
- 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_off0000e097.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE097	17868 bytes
SHA-256: `05e08c4516223115e26cc7ca973b6f256cb766e6a8a27342bc36d49d8f183e96`
`font_01_sfnt_off00010ed6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10ED6	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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