PDF malware analysis — malicious · be4692769e4ad5c6

MALICIOUS

PDF

85.1 KB Created: 2021-09-13 13:45:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: 1054cbd9c4e1762f1ac163e05e59d6f9 SHA-1: 5d15c13984601bdbf0f425c7842a075d150a620d SHA-256: be4692769e4ad5c6c84fef81495d925a1c75883c6d62a2aaab57c1871ec77e92

74 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of external links, many pointing to other PDF files hosted on disposable domains. The primary URL suggests a lure for downloading Android games, indicating a potential phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

Heuristics 5

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://catamma.ru/uplcv?utm_term=tekken+3+download+for+android+mobile PDF link annotation
- http://zbraneklapka.cz/ckfinder/userfiles/files/770975867.pdfIn PDF document text
- http://romengo.com/ckfinder/userfiles/files/2371496837.pdfIn PDF document text
- http://cheapneasytrafficschool.com/CheapNEasyTrafficSchool/pa/trainstation/uploads/image/file/biwaga.pdfIn PDF document text
- http://hokkaido-love87.com/app/webroot/js/ckfinder/userfiles/files/6590448936.pdfIn PDF document text
- https://pasarantogel2.com/contents/files/keberigizixajurofejumufal.pdfIn PDF document text
- http://abnicum.com/files/file/savubemogukiditupa.pdfIn PDF document text
- https://tierrettung-in-katalonien.org/ckfinder/userfiles/files/21805322878.pdfIn PDF document text
- http://krupongs.com/images/file/41498247810.pdfIn PDF document text
- http://a-pluset.com/userfiles/susevifegemak.pdfIn PDF document text
- https://santa.sg/images/users/00000000/files/sapogovesuvezegemi.pdfIn PDF document text
- https://chogmai.org/ckfinder/userfiles/files/pakozetamoxixofe.pdfIn PDF document text
- http://sakem.org/userfiles/files/546168205.pdfIn PDF document text
- http://domki-kopalino.pl/pliki/7397085087.pdfIn PDF document text
- http://www.ocptecnology.com/admin/uploaded/fck/file/98669854641.pdfIn PDF document text
- http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cd38a634df---xozuvopoj.pdfIn PDF document text
- http://back2wood.de/userfiles/file/kilorabor.pdfIn PDF document text
- http://asckhn.com/acskhn/userfiles/file/69428094578.pdfIn PDF document text
- http://biancoacolori.it/userfiles/files/kipexotoxor.pdfIn PDF document text
- https://nycsmindia.org/ckfinder/userfiles/files/79957835214.pdfIn PDF document text
- http://fernandopelosini.it/userfiles/files/93617098141.pdfIn PDF document text
- http://italiangreyhound.pl/img1/userfiles/file/kubazavixenu.pdfIn PDF document text
- http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16135741ead1ca---64163879737.pdfIn PDF document text
- http://infoegrafica.com/userfiles/files/finup.pdfIn PDF document text
- http://innova-perila.ru/upload/files/tapokunikad.pdfIn PDF document text
- https://joinvita.com/neu/userfiles/file/24578572605.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_off0000e078.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE078	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f88f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF88F	10700 bytes
SHA-256: `762b7f8cd0d2d2691c44e1e66a8e90f275c2a6111296038b0f3ff601b7eb32a6`
`font_02_sfnt_off0001112c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1112C	20156 bytes
SHA-256: `54077e5e8db851241821c1e36ac6bd552a7f7c0f072444a17d380d238aff9fc2`

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