PDF malware analysis — malicious · 7fc574a594344aff

MALICIOUS

PDF

88.5 KB Created: 2021-09-20 22:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 0af200d0c8cdb60d096261f3376d7443 SHA-1: 9e2883cf44acdd5d673e0dff7fca589168e41e10 SHA-256: 7fc574a594344aff47272d113ae591dc4a6e03fd8975ea333b9c0586ba4e4c18

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment

This PDF document was flagged by a machine learning classifier and ClamAV as malicious. It contains numerous external links, many of which point to disposable hosting. A critical heuristic indicates the document attempts to lure the user into executing commands by copying and pasting content, likely to download and execute a second-stage payload. The presence of multiple URLs suggests a phishing or spamming campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9942

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
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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://archism.ru/uplcv?utm_term=new+punjabi+movies+watch+online PDF link annotation
- https://alternativecarrepair.nl/userfiles/file/monomorojo.pdfIn PDF document text
- https://www.whoamiandwhyamihere.com/ckfinder/userfiles/files/3359180036.pdfIn PDF document text
- http://skupka54.ru/upload/m/bozizarob.pdfIn PDF document text
- https://ntct.dz/ckfinder/userfiles/files/4100331589.pdfIn PDF document text
- https://promenade-perpignan.com/userfiles/file/kufojenunejadizukukutek.pdfIn PDF document text
- http://rivebistro.net/ckfinder/userfiles/files/xupelof.pdfIn PDF document text
- http://slsnn.ru/content/files/xazefiveselaz.pdfIn PDF document text
- https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/120511664ae45549067ac1c72e42fdff/busavusotoniduvizetojin.pdfIn PDF document text
- http://ldkxzzs.com/images/userfiles/file/16678625084.pdfIn PDF document text
- http://feuerwehr-mittenwalde.de/mediathek/files/72266367298.pdfIn PDF document text
- https://iwanbim.com/userfiles/files/50169332270.pdfIn PDF document text
- http://seed-hongkong.com/uploads/file/70622068026.pdfIn PDF document text
- https://china-glass-mosaic.vegner.com/userfiles/files/20210905_001557.pdfIn PDF document text
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16135e3692ed59---kazavavenudiwejep.pdfIn PDF document text
- http://consol.hu/images/uploadedimages/file/kagirokijewutomoranaj.pdfIn PDF document text
- http://ngor2-3.com/file_media/file_image/file/66198593694.pdfIn PDF document text
- https://austarpharma.com/upload/files/82945191436.pdfIn PDF document text
- https://ozsersogutma.com/upload/files/30780393072.pdfIn PDF document text
- http://artpolyclinic.com/file/files/wutiveromanugegagu.pdfIn PDF document text
- https://360clothing.indicsys.com/home/www360cl/public_html/uploads/images/files/jadowaralosodokose.pdfIn PDF document text
- http://tmacfashion.com/ckfinder/userfiles/files/zuzupisotepab.pdfIn PDF document text
- https://agermag.ro/mm/file/29729784109.pdfIn PDF document text
- https://masukpt2.com/contents/files/45245647661.pdfIn PDF document text
- http://homearcky.nl/userfiles/file/getekinegepedomisatevu.pdfIn PDF document text
- http://robwalker.net/fckupload/file/gamidawoku.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_off0000f626.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF626	11040 bytes
SHA-256: `789e64c1cf839ff54cd4ff26d19c8d62857c2124da3aee58530bee1cd8d9602d`
`font_01_sfnt_off00010f79.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10F79	17556 bytes
SHA-256: `a4153a466f2a6d747f93175f556e51cefe62cf37bc3822ebfdc278079e9adf02`
`font_02_sfnt_off00013c9f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13C9F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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