PDF malware analysis — malicious · f0a33e45d5c421ec

MALICIOUS

PDF

86.7 KB Created: 2021-09-23 02:21:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 9e9dde1c044b74aa59a3149379f38288 SHA-1: 4e2a5f133b0e25b4cb2cab347bd9df4de13a729e SHA-256: f0a33e45d5c421ec2a92d773793890c24fae5cd5b8cbf6ae9f12874b69ef6240

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to PDF files hosted on various domains. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a high number of distinct hosts and links, suggesting a coordinated effort to manipulate search engine results or distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9976

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 http://scsychem.com/upload/files/61921398194.pdf In PDF document text
- http://franzoesischebulldoggen.eu/userfiles/file/xebadelirare.pdfIn PDF document text
- http://medizator.ru/ckfinder/userfiles/files/wisakajakazezu.pdfIn PDF document text
- https://ecodiagnost.com/ckfinder/userfiles/files/mogewesesa.pdfIn PDF document text
- http://niezapominajkowo.eu/userfiles/file/jaxubutuwukenal.pdfIn PDF document text
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/79c76c56e13e237e9627a3b66a2887cc/salavurax.pdfIn PDF document text
- http://twtime.com/uploads/files/202109120600569599.pdfIn PDF document text
- http://coffee33.ru/archive/file/27138265085.pdfIn PDF document text
- https://geloracinta.com/contents/files/kedagabojogekogubopa.pdfIn PDF document text
- http://neoneofitou.com/ckfinder/userfiles/files/wexiwofidekiwug.pdfIn PDF document text
- https://kapefashion.com/files/files/30259200701.pdfIn PDF document text
- https://newtech-utm.pl/userfiles/file/kedewanuguzejirunusufewab.pdfIn PDF document text
- https://ilexgold.com/app/webroot/files/userfiles/files/repakukenoxig.pdfIn PDF document text
- https://babetravelling.com/ckfinder/userfiles2/files/pazibesuxemasovatowez.pdfIn PDF document text
- http://lex.tj/img/file/buvep.pdfIn PDF document text
- http://nguoigiupviec99.com/webroot/img/files/zafozibip.pdfIn PDF document text
- http://perechen-jurnalov.ru/js/ckfinder/userfiles/files/jojusebiverunep.pdfIn PDF document text
- http://yasairamenbar.com/uploads/files/28853703583.pdfIn PDF document text
- http://keemunblacktea.cn/uploads/file/112115247491.pdfIn PDF document text
- https://thieumaunao.vn/workspace/develop/uploads/ck_upload/files/rinadalorikilesuzamatos.pdfIn PDF document text
- https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142f01583770---lujozoxinudumojamawovi.pdfIn PDF document text
- http://joeun-it.com/userData/board/file/49353938025.pdfIn PDF document text
- https://gabinetpro.pl/kosmetyczka/krakow/files/xowatafosif.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=the+gifted+season+1+ep+1PDF link annotation
- 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_off0000ed0c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED0C	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0001051e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1051E	17916 bytes
SHA-256: `76d11b2d817d9c9e71736db0e3632be7fc5f91809ca91ed13de1937fcb93044d`
`font_02_sfnt_off0001333d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1333D	10648 bytes
SHA-256: `6d82fc9fbb95a38e1ef036f37143f96af56adfab5429ebb21d670a6d344d8a2a`

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