PDF malware analysis — malicious · 02969b79a95c22ed

MALICIOUS

PDF

82.0 KB Created: 2021-09-18 00:07:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 4d96656c509fa970aea2b1300b3879f1 SHA-1: 545fa8102e3e6183f079301f7d475f457eff89d1 SHA-256: 02969b79a95c22ed4598460fb6a31a98e9e7f24f18e67ba44671f60e7dbb9d24

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample was flagged by ML classifiers and ClamAV as malicious, with heuristics indicating embedded JavaScript and a large number of external URIs. The PDF document's structure suggests it functions as a link farm, directing users to various potentially malicious websites for phishing or malware distribution. The embedded JavaScript likely facilitates the redirection or further malicious activity.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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 https://archism.ru/uplcv?utm_term=deploying+app+to+play+store PDF link annotation
- https://amrapalispot.com/userfiles/file/98806097466.pdfIn PDF document text
- http://fszhenjia.com/upfolder/e/files/20210902061319.pdfIn PDF document text
- https://newchat.xyz/js/ckfinder/userfiles/files/tasigijixon.pdfIn PDF document text
- http://hockjoohin.com/admin/uploads/file/51836722969.pdfIn PDF document text
- http://dkkarsin.pl/img/upload/files/dufumepakuputekazige.pdfIn PDF document text
- https://pointwebhost.com/calisma2/files/uploads/silidizupikawuzosutij.pdfIn PDF document text
- http://prabashproperties.com/ckfinder/userfiles/files/94352558710.pdfIn PDF document text
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612eabb45aa4b---25643170864.pdfIn PDF document text
- http://yizhu580.com/ckfinder/userfiles/files/63702747127.pdfIn PDF document text
- http://ducnhua.com/upload/files/10764143886.pdfIn PDF document text
- https://autoskola-scp.com/files/xumigujem.pdfIn PDF document text
- https://bedandbreakfastholten.nl/userfiles/file/pilegejafego.pdfIn PDF document text
- https://shindah.com/images/ckeditor_img/files/89785269254.pdfIn PDF document text
- http://vuonlan.vn/data/upload/files/fiborogesozubu.pdfIn PDF document text
- https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/16137e802e08eb---58722614393.pdfIn PDF document text
- http://khodahoanglang.com/admin/webroot/upload/image/files/63392256827.pdfIn PDF document text
- https://planet-pvc.com/upload/files/pukovegufakaxajekuvor.pdfIn PDF document text
- http://suamanhinhlcd.net/userfiles/file/xopevuxovusobaz.pdfIn PDF document text
- http://rujiahk.com/uploadfiles/file/mutasi.pdfIn PDF document text
- https://semsaesp.com/ckfinder/userfiles/files/51676469531.pdfIn PDF document text
- http://nanoscopy.ru/uploads/files/90306487162.pdfIn PDF document text
- http://ahkjt.com/upfile/file/46548232513.pdfIn PDF document text
- http://ewhamd.net/upFiles/ckeditor/files/64803123134.pdfIn PDF document text
- http://theloanwala.com/userfiles/file/76551695525.pdfIn PDF document text
- https://kuraniterbiye.com/resimler/files/dumikakur.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_off0000db34.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB34	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f34b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF34B	10540 bytes
SHA-256: `5fd5c2442c9beee76320d6042aaa53c2a84b4bbb9b407a5331b370bfee6df205`
`font_02_sfnt_off00010b78.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B78	18180 bytes
SHA-256: `82c7fc25c41b94eb66dda1ddf9f0ec93e1fa06ee5235d966c0e94ed22537d514`

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