PDF malware analysis — malicious · d2657bcec0358373

MALICIOUS

PDF

70.7 KB Created: 2021-09-01 10:03:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: d31c1cbfeaaef58dcff6c8bd6d2416ab SHA-1: d8c5838b12ba61daa28a9a9de012ba1ba96a8b9a SHA-256: d2657bcec0358373f27493351a5adad7dd0b598b2bd97fa258cc2de4985bf4d1

162 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code within documents. The presence of numerous external URIs, many pointing to compromised WordPress sites and disposable hosting, indicates a link farm designed to redirect users. ClamAV detection and ML classification further support its malicious nature, likely serving as a phishing lure or a downloader for further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.5560

Heuristics 6

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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://studioriggio.it/userfiles/files/61219796813.pdf In PDF document text
- https://emotionalgift.com/ckfinder/userfiles/files/27212938666.pdfIn PDF document text
- http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ed8c52b1595---pixorazoranenom.pdfIn PDF document text
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/aaoeinooo95gmqde3p6f9u5mq5/dofesone.pdfIn PDF document text
- http://clubcrudupsonoma.com/clients/1/14/14cf715f5cd05ddba197ceaa5938d7d5/File/legoginenavenen.pdfIn PDF document text
- http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160816c5a7286d---guzinogovakobezesufadumeb.pdfIn PDF document text
- http://soupworld.de/upload/file/61476720444.pdfIn PDF document text
- https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/31ade8006653436b813ec2d523e96821/84030351763.pdfIn PDF document text
- http://elazentrale.de/images/uploaded/file/77226165348.pdfIn PDF document text
- http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/e791ec5c57a086f4af7445e940953e26/gupekebul.pdfIn PDF document text
- http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608792a9817a1---4487148304.pdfIn PDF document text
- http://edgewood1962.com/clients/2/2b/2b25cacec04995aba37d275b9c35b4d1/File/43372529531.pdfIn PDF document text
- https://viessmannboilers.ca/fck_upload/file/17468624572.pdfIn PDF document text
- https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/4a0b7bdb6b77915dc3574781201cb973/dawijor.pdfIn PDF document text
- http://startmatbaa.com/userfiles/file/95763622320.pdfIn PDF document text
- http://finalstage.biz/js/upload/files/14551162473.pdfIn PDF document text
- http://angelofthewinds.net/ckfinder/userfiles/files/66548744757.pdfIn PDF document text
- http://roomyab.ir/basefile/roomyabir/files/rozinopejifugimaniwunafat.pdfIn PDF document text
- http://shuswapladystriders.ca/userfiles/file/64468454983.pdfIn PDF document text
- http://www.yevres.fr/ckfinder/userfiles/files/86709256125.pdfIn PDF document text
- http://feach.ie/images/uploads/file/vexevi.pdfIn PDF document text
- https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/32d14934f0fe8a1709a2d19bcfe35f49/48043876204.pdfIn PDF document text
- http://www.museopizarra.com/ckfinder/userfiles/files/kuvuj.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=main+events+of+chapter+4+lord+of+the+fliesPDF link annotation
- http://perfecturology.cafe24.com/upload/editor/imagefile/47213284379.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_off0000e60e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE60E	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000fe25.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE25	10852 bytes
SHA-256: `54abd333ec6eff63707d2ddabb1347ea80485552d8d3c50ba262f4fd450f3940`

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