PDF malware analysis — malicious · 19bd862416b52e67

MALICIOUS

PDF

85.8 KB Created: 2021-10-23 08:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25

MD5: 2e4e47707a17d512097f98a1a098f5cb SHA-1: 01908a0bc33006f05019303e08b2997dd8f8737e SHA-256: 19bd862416b52e67295f140929f9f97397ddbf7a65308566fa13153c92c06a29

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as a malicious PDF by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external links, many pointing to disposable domains, suggesting a link farm or redirection mechanism to malicious sites. The PDF's structure and embedded links are consistent with attempts to trick users into visiting compromised or malicious web pages.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

Heuristics 5

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.
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://austarpharma.com/upload/files/94387498464.pdf In PDF document text
- http://rebornfair.com/FileData/ckfinder/files/20211005_E1BEEDC092FC414C.pdfIn PDF document text
- http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616a8c203218b---jejeb.pdfIn PDF document text
- https://buzascsaba.hu/userFiles/file/rasefumip.pdfIn PDF document text
- https://reclamesticker.nl/images/uploads/file/In PDF document text
- http://camonetinternational.com/files/file/57019838552.pdfIn PDF document text
- https://nordavril.com/userfiles/file/29952331937.pdfIn PDF document text
- https://www.vasutaszeneiskola.hu/ckfinder/userfiles/files/67872185407.pdfIn PDF document text
- http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/p26rsddl5kccti7sqiv565bv52/gukerow.pdfIn PDF document text
- http://bluebossa.pl/files/file/89909914846.pdfIn PDF document text
- http://www.mediagrand.hu/data/editorfile/tebirabewuvev.pdfIn PDF document text
- http://xinshifm.com/userfiles/file/fulavivozunivul.pdfIn PDF document text
- https://fertilizergranulatorprice.com/d/files/xogelizamimubi.pdfIn PDF document text
- http://cy2hand.com/userfiles/rifopiwodevabibavuzifep.pdfIn PDF document text
- https://anaksemut.com/contents/files/kozulibit.pdfIn PDF document text
- https://chulintemple.org/CKEdit/upload/files/76240451001.pdfIn PDF document text
- http://piazzademarini3ge.com/userfiles/files/14625377923.pdfIn PDF document text
- http://bandbaajabarat.com/ci/userfiles/files/vekized.pdfIn PDF document text
- http://abw10thstreetne.com/uploads/files/gikafip.pdfIn PDF document text
- https://accuratesearch.com/userfiles/file/664074532.pdfIn PDF document text
- http://airconbank.com/upload/fckeditor/file/togafidusavawopufuginofu.pdfIn PDF document text
- http://houtackers.nl/userfiles/file/75139006106.pdfIn PDF document text
- http://usefchina.com/uploadfile/file///2021101621475069.pdfIn PDF document text
- http://dlabiura.kbo.pl/ckfinder/userfiles/files/zinonajigevoberazekana.pdfIn PDF document text
- https://feedproxy.google.com/~r/Gsjc/~3/cmwvf4RlXg4/uplcv?utm_term=bdo+ps4+mouse+and+keyboardPDF 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_off0000e701.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE701	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000ff13.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF13	18964 bytes
SHA-256: `2082d81a61bc453ff6540e155bd7f1e8ec69afff84bf91141f5179b79a0e8463`
`font_02_sfnt_off00013133.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13133	10892 bytes
SHA-256: `be3581817fd963a28ed859973e7c1a5ef44e1fc33e160fa9409a9ed811dae787`

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