PDF malware analysis — malicious · 5a3404bfd2c1ffc2

MALICIOUS

PDF

75.9 KB Created: 2021-09-12 06:12:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 38021e9e96623bff6dee1e8584603a99 SHA-1: b3b408edec9c74dff506d27cffc6b3f83532eb5e SHA-256: 5a3404bfd2c1ffc2d48db3bb22fdf71c02897b2f04fa252f6fb8776aaab554c6

172 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and numerous external links, many of which are algorithmically generated and hosted on disposable domains, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier further support its malicious nature. The embedded JavaScript likely attempts to exploit vulnerabilities or redirect the user to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.6397

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK

PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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 https://crysiq.ru/uplcv?utm_term=beauty+plus+apk PDF link annotation
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/b25fa205b6d0a21d3c347270822237c9/91522283596.pdfIn PDF document text
- http://balbu.eu/uploads/news/file/pigomepos.pdfIn PDF document text
- https://lotteppta.net/beta/assets/file/sonedibixibajuxerogimizi.pdfIn PDF document text
- https://eetravel.net/file/nefagitujatomozatibokusod.pdfIn PDF document text
- http://garage-ys.info/js/upload/files/35343496503.pdfIn PDF document text
- http://clinicaveterinariacittadivignola.com/userfiles/files/sekagojafomerad.pdfIn PDF document text
- http://bodybybodyology.com/ckfinder/userfiles/files/45631159090.pdfIn PDF document text
- https://priscar.com/documents/files/verur.pdfIn PDF document text
- https://nangluongvada.com/uploads/files/65582576480.pdfIn PDF document text
- http://phucuongplus.com/upload/files/pekozejejurosudok.pdfIn PDF document text
- http://perfectionistpaintingnj.com/ckfinder/userfiles/files/34763820854.pdfIn PDF document text
- http://web5gstore.com/Files/files/30428943876.pdfIn PDF document text
- http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/goxawawemelafatux.pdfIn PDF document text
- https://xn--23-6kci4asohe8k.xn--p1ai/userfiles/file/58900103473.pdfIn PDF document text
- http://speakingaboutnetworking.com/ckfinder/userfiles/files/87384932303.pdfIn PDF document text
- https://bisleri.genefied.co/ckfinder/userfiles/files/28411693443.pdfIn PDF document text
- https://kingbakerypans.com/userfiles/file/jisebuxegajuvotowemota.pdfIn PDF document text
- http://www.cafeinca.com/img/public/contenido/file/23660082602.pdfIn PDF document text
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613a1f1057f50---15532478946.pdfIn PDF document text
- https://kanalprofi.at/UserFiles/file/wusatigeloroxunukaz.pdfIn PDF document text
- https://eetravel.net/file/93310841292.pdfIn PDF document text
- http://fjzy18.com/image/uload/files/dogufivedivusonofotomigu.pdfIn PDF document text
- http://ayurveda-shiatsu-nice.com/upload/files/fuxojoximadajapekiv.pdfIn PDF document text
- https://renetravel.ro/images/files/niretowapipexogu.pdfIn PDF document text
- https://rowadalbyt.com/userfiles/files/buvijifalunaxagipirawejo.pdfIn PDF document text
- http://romanakladatelstvi.cz/userfiles/file/tipomizog.pdfIn PDF document text
- 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_off0000d818.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD818	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f02f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF02F	10188 bytes
SHA-256: `45b4361626d71df0479ddf063877bebec01770659a2c0f65002a8f6dcf3a30ad`
`font_02_sfnt_off00010742.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10742	17084 bytes
SHA-256: `a94721c1afccd6db49f50399b879596cc3d3e052b2a222ba07145ff035137454`

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