PDF malware analysis — malicious · e5efb6e94bd4a292

MALICIOUS

PDF

80.4 KB Created: 2021-09-04 03:10:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 09697e525b223848a310bed78f81c1e6 SHA-1: 19e99ed73b6b07cc319de7284ec6cffe3b52af2f SHA-256: e5efb6e94bd4a292c952b6ad0132c2e329d1dad827334c08611d1e31b245aaa3

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised CMS upload directories, suggesting a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were extracted, the structure and URL patterns are consistent with a malicious PDF designed to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9846

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.
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 http://shinies.ru/img/lib/file/gijuvakinomevakuloxa.pdf In PDF document text
- http://kfnmsz.com/upfolder/e/files/20210827124827.pdfIn PDF document text
- https://mdteam.se/ckfinder/userfiles/files/27560121815.pdfIn PDF document text
- https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/11e74eeea2b979ed51991a812cc5584e/lukanazamaluvo.pdfIn PDF document text
- http://sherwoodchambergolf.org/ckfinder/userfiles/files/kirivuvotov.pdfIn PDF document text
- https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce0496b83a---volisaxezive.pdfIn PDF document text
- https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/g8iipv46le7v5mf841a5vh2nsj/busalivebu.pdfIn PDF document text
- https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/2649070d5429393eb0fe29b717695712/57672396402.pdfIn PDF document text
- http://resurrection-life.net/userfiles/files/5327201024.pdfIn PDF document text
- https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/ba2e2f1300be16e2013f1ce61be10dcb/saboxewe.pdfIn PDF document text
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/2rloama5iuf0kq539q1fkh1adb/xuxir.pdfIn PDF document text
- http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/mlistfdi99fnae1jj3tgou5sf3/pofunonineginibaxevuwug.pdfIn PDF document text
- http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1611b8426ccbef---xuzatizugo.pdfIn PDF document text
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16086a2187a0f8---7505379387.pdfIn PDF document text
- http://cp-tournament.org/ckfinder/userfiles/files/42469890208.pdfIn PDF document text
- https://dichvumoinoi.com/ckfinder/userfiles/files/wupomamobivuxodemixozo.pdfIn PDF document text
- http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/srhr6dc8la2ssa05a0scu5pcp5/74616082293.pdfIn PDF document text
- http://mamaskitchenorder.com/uploads/files/24919736010.pdfIn PDF document text
- https://astoraccessories.com/uploads/ckfinder/files/ladiragudi.pdfIn PDF document text
- http://budka39.ru/files/38943282863.pdfIn PDF document text
- http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607016b19a7fb---17680976549.pdfIn PDF document text
- http://gccde.com/downloads/blog/geust/files/8180053450.pdfIn PDF document text
- http://americanpetrochemicals.com/customers/CMS-IMAGES/file/zovuwarusepuwixisazug.pdfIn PDF document text
- https://www.funes.gob.ar/ckfinder/userfiles/files/63164752289.pdfIn PDF document text
- http://litho-and-co.fr/ckeditor/upload/files/kutapukepuv.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=thorax+anatomy+notes+pdfPDF link annotation
- https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/37e5ff13c8de2eaf547fd566be218e38/xapitorafobawujik.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_off0000d5e4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD5E4	17504 bytes
SHA-256: `33969e50db1c9fe785e27e3841fc2b8d72374fce0028c529b25ece1f5ca99394`
`font_01_sfnt_off00010368.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10368	10804 bytes
SHA-256: `ffdbeee5fdf4a8163067924cd69eab6fa10108f695c7198f1f628af35193f0c7`
`font_02_sfnt_off00011c33.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11C33	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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