PDF malware analysis — malicious · 1fdf1551901fabca

MALICIOUS

PDF

81.3 KB Created: 2021-09-17 02:13:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 07daff957acf0148fc7b59b52dd40d55 SHA-1: 720462188d8ade7ca76319ab56c21a5eeb3676ae SHA-256: 1fdf1551901fabca3d1df76d9825daeabd2ee79ac69e0b2dca2c1869243e3b35

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript and a large number of external URIs, many of which are hosted on disposable domains or link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for exploiting PDF vulnerabilities or redirecting users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9955

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
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
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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://oniceh.ru/uplcv?utm_term=racing+games+play+store PDF link annotation
- https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f9d85f2434---17538918040.pdfIn PDF document text
- http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/ded3724f9638a3d4e93d0678baeb7d41/29700072259.pdfIn PDF document text
- https://fallsplat.se/bildbank/file/72832616777.pdfIn PDF document text
- https://ijmscr.com/ckfinder/userfiles/files/rubudalunavavobarexal.pdfIn PDF document text
- http://vakaruinzinerija.lt/userfiles/file/naturudagolovuwavavosepan.pdfIn PDF document text
- http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/juvoxoroxevonu.pdfIn PDF document text
- http://spamsmsgiare.com/media/ftp/file/mibivekotaw.pdfIn PDF document text
- http://vocal.bpv.su/content/files/files/dabatedigabo.pdfIn PDF document text
- https://www.allduniv.ac.in/ckfinder/userfiles/files/migerelefalozudefiripoxob.pdfIn PDF document text
- http://www.fuchingrading.com/upload/file/34177776100.pdfIn PDF document text
- http://hardiebase.com/uploads/assets/filefile/fiwuzom.pdfIn PDF document text
- https://www.tulsarad.com/my_content/js/ckfinder/userfiles/files/50015065152.pdfIn PDF document text
- https://pmfegypt.com/userfiles/files/74474836835.pdfIn PDF document text
- http://hamyarsanatco.com/ckfinder/userfiles/files/muxasowu.pdfIn PDF document text
- https://noventa.cz/media/files/file/12981950911.pdfIn PDF document text
- https://editionsitaliques.com/userfiles/file/bisiduwug.pdfIn PDF document text
- http://lamay.de/userfiles/file/61258811988.pdfIn PDF document text
- https://metricgroup.it/uploads/file/dekolatilibalenizexuz.pdfIn PDF document text
- http://myjobcareer.net/userfiles/file/2021091108471073499.pdfIn PDF document text
- http://ore-processing.ru/d/files/55988592344.pdfIn PDF document text
- http://vako.vn/app/webroot/uploads/files/diguwoxozawob.pdfIn PDF document text
- http://rosesrealtyhomes.com/userfiles/files/puvibapizagukimuwut.pdfIn PDF document text
- https://casaalu.com/luutru/files/nesupirotijetit.pdfIn PDF document text
- http://mvdeastudio.it/userfiles/files/19605112212.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In 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_off0000d775.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD775	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000ef8c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF8C	10876 bytes
SHA-256: `395d05fdcf44cf62f64c2f70c70713b4ef9e181cbc1711debfa44f301d271905`
`font_02_sfnt_off000108b0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x108B0	18096 bytes
SHA-256: `bf4e4e766cbc9ac64b4afb2cacb31ab33e77e1ee8145d3ce6ae346f511b202b7`

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