PDF malware analysis — malicious · 2b6060020f54844f

MALICIOUS

PDF

79.9 KB Created: 2021-09-16 04:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24

MD5: caa7a5a654b584671ba4c82b1be1b301 SHA-1: 8e827302351989c295cd80c6dcc347dd44337f29 SHA-256: 2b6060020f54844fa59f77b05b64faa0af13811e8b5a6c2f580eda51738d0a1c

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains numerous embedded URLs and a heuristic firing for a 'download button' lure, suggesting it's designed to trick users into downloading further malicious content. The presence of multiple external links, including one pointing to a potential malware file, reinforces this phishing and distribution vector.

Machine Learning

Nyx PDF Classifier malicious score 0.9953

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://wastran.ru/uplcv?utm_term=the+pirate+bay+proxy+net PDF link annotation
- http://sakesushilakehavasu.com/uploads/files/fizeb.pdfIn PDF document text
- http://thebankcardservices.com/uploads/files/14297304045.pdfIn PDF document text
- https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/fbj6uuepae3033prgb9d2rs14c/41729780105.pdfIn PDF document text
- https://nstoplana.rs/ckfinder/userfiles/files/63512724025.pdfIn PDF document text
- https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/hoetnbcoqup18h84b9r6qcror7/31132703590.pdfIn PDF document text
- http://gz-theoutfit.com/UploadFiles/FCKeditor/20210908120919.pdfIn PDF document text
- https://nilsahost.com/calisma2/files/uploads/vuwuxitupepupa.pdfIn PDF document text
- https://hongmao.tw/uploads/files/202109010857498739.pdfIn PDF document text
- http://style4.allwebeasy.com/userfiles/files/74588895084.pdfIn PDF document text
- http://lesmashclub.com/imgUpload/files/xogowewojevidasefojuga.pdfIn PDF document text
- https://garraldaarquitectura.com/garralda_userfiles/files/16463959614.pdfIn PDF document text
- http://softtox.com/new/userfiles/file/wizexutalijegotukeboteko.pdfIn PDF document text
- https://pensionradvanice.cz/res/file/76540256718.pdfIn PDF document text
- https://cjsc.se/ckfinder/userfiles/files/lekunegamawavo.pdfIn PDF document text
- http://3q1p.com/upload/file/210916014249046876xeowhp2hn3c2.pdfIn PDF document text
- http://tmacfashion.com/ckfinder/userfiles/files/bojaxolok.pdfIn PDF document text
- https://detskeihriska.eu/ckfinder/userfiles/files/92559688155.pdfIn PDF document text
- http://hanyangsteel.com/files/fckeditor/file/340434462613568ffbaf6d.pdfIn PDF document text
- http://bawaconstructions.com/editorData/file/losofasevesugesor.pdfIn PDF document text
- http://jgbt.us/pds/userfiles/files/kilunolotugovidolemasu.pdfIn PDF document text
- https://wronba.pl/uploads/wysiwyg/file/towopadokof.pdfIn PDF document text
- http://likebarcode.com/image/files/20210906_202308.pdfIn PDF document text
- http://vektorma.ru/uploads/assets/file/55615084593.pdfIn PDF document text
- http://bekescsaba.varosom.hu/userfiles/files/91546835114.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_off0000d4a1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD4A1	10452 bytes
SHA-256: `989f884d09fb93b6daaac54e18b9661151ced4cc1afe015a84b0444466e53a2c`
`font_01_sfnt_off0000ec1f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC1F	17748 bytes
SHA-256: `045b1a6df1d887338e24952082abeb81da3cd523e997746da416529ac18a038c`
`font_02_sfnt_off00011a17.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11A17	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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