PDF malware analysis — malicious · 080569697ffac0e8

MALICIOUS

PDF

81.1 KB Created: 2021-09-20 16:32:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: 6e98c36cf219522129ca3a16d57ffb2b SHA-1: 5d52e623ed6550d6f5455f40ed8e4eba01aefee4 SHA-256: 080569697ffac0e887e98b8f28b9c36d14a7a74293b20ef2cf5a7fc3a5f23a9b

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV and an ML classifier, with heuristics indicating embedded JavaScript and a link farm pointing to compromised CMS uploads and disposable hosting. The embedded JavaScript likely facilitates the redirection to malicious URLs, such as the one found pointing to 'catamma.ru', which is a common tactic for phishing or malware delivery. The presence of numerous external links suggests an attempt to distribute malicious content or redirect users to phishing sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9977

Heuristics 7

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.
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=injector+full+sound+effect+apk PDF link annotation
- http://cartopack.be/Images/file/44250364485.pdfIn PDF document text
- http://studiotecnicoarduini.eu/userfiles/files/29234668684.pdfIn PDF document text
- https://kolkataangikar.org/ckfinder/userfiles/files/ramefisarumat.pdfIn PDF document text
- https://linlinline.biz/js/ckfinder/userfiles/files/segigixafowim.pdfIn PDF document text
- https://davaocarrental.com/images/file/palitapusuresuditewu.pdfIn PDF document text
- https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/c02d54c64d8a89dd961d9705754c26bf/59353705563.pdfIn PDF document text
- https://bishopsalamatkhokhar.org/userfiles/file/zuzixivexadobagokafelur.pdfIn PDF document text
- http://longvu.vn/Images_upload/files/30753365553.pdfIn PDF document text
- http://e-district.org/userfiles/file/46324449497.pdfIn PDF document text
- https://camerabentrenet.camerabentre.vn/ckfinder/userfiles/files/66641552902.pdfIn PDF document text
- http://betonkeritesek.eu/Content/files/ravumunuwanere.pdfIn PDF document text
- http://grafichesirio.com/userfiles/files/xulowipejutezopakowafosal.pdfIn PDF document text
- http://getrade.net/uploadfiles/file/rogetomodavapibegiturena.pdfIn PDF document text
- http://malir-naterac.info/UserFiles/File/53347919038.pdfIn PDF document text
- http://hmed.vn/upload/files/ribibonarilewaso.pdfIn PDF document text
- https://ginecologmuresan.ro/ckfinder/userfiles/files/moxilipixab.pdfIn PDF document text
- https://coaching-jk-academic.com/ckfinder/userfiles/files/fazosa.pdfIn PDF document text
- https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/cc24nse8celm02llm2q8b18jr2/tomodixubolezabawexiz.pdfIn PDF document text
- http://vandervalk.reviews/app/webroot/files/userfiles/files/93415306067.pdfIn PDF document text
- http://ncfc.com.tr/ckfinder/userfiles/files/xovotadenuwijutol.pdfIn PDF document text
- https://idd.no/ckfinder/userfiles/files/70211273306.pdfIn PDF document text
- https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/966670765f5713d1b80406d9a3fd47cb/lulunujafiweligevelapimi.pdfIn PDF document text
- http://ccshecea.org/upload/files/xubezeveduvugadusajafibeb.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_off0000d8e3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8E3	17380 bytes
SHA-256: `1c727c5db3af5d42181393185b34d61d20f86912a6bb284ec231f6978751150a`
`font_01_sfnt_off000105a8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x105A8	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011dbf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11DBF	10796 bytes
SHA-256: `5a97a7a36af384c24c1969e882a9903cd685ca6352809f5ef07d34252dcaaf8f`

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