PDF malware analysis — malicious · 8f5aef9888cc82d0

MALICIOUS

PDF

70.7 KB Created: 2021-09-30 22:13:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24

MD5: 60094651887304ef21de770b6b9f3409 SHA-1: 07a5c72b6d852c301a7dd9dd4fd60a369ec75381 SHA-256: 8f5aef9888cc82d0e9d0a7357ca0eba110994c04860b3921f08671764a3e89a3

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable domains or are part of a link farm, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 0.9982

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK

PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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.
QR-code redirect lure medium SE_QR_LURE

Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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://pistant.ru/uplcv?utm_term=top+rated+photo+editing+app+for+android PDF link annotation
- https://campermagazine.tv/public/file/pegijez.pdfIn PDF document text
- http://bibikid.ru/upload/71792916447.pdfIn PDF document text
- https://marblobaths.ph/app/webroot/img/files/wipexiv.pdfIn PDF document text
- http://arci-mp.fr/admin/File/dakegizov.pdfIn PDF document text
- http://jiji.pgo.tw/pic/uploads/files/mekajezabunutiwavofugosi.pdfIn PDF document text
- https://milsagliksen.org/upload/ckfinder/files/60004813586.pdfIn PDF document text
- http://ajivikafinance.com/userfiles/file/95244720917.pdfIn PDF document text
- http://debseven.net/UserFiles/File/35290774185.pdfIn PDF document text
- https://olterus.org/contents/files/47543682134.pdfIn PDF document text
- http://kondicionery-elektrostal.ru/upload_picture/file/loxuge.pdfIn PDF document text
- http://packturf.fr/files/gesanojom.pdfIn PDF document text
- https://slotpt2.com/contents/files/fiserofasozefefevub.pdfIn PDF document text
- https://bahamianbrewery.com/ckfinder/userfiles/files/jetekefofigalinuviw.pdfIn PDF document text
- https://spacio.hk/attachment/file/31157826116.pdfIn PDF document text
- http://abwmechanicsville.com/uploads/files/vokavexotugexolip.pdfIn PDF document text
- http://boldogelet.hu/media/9493933367.pdfIn PDF document text
- http://www.sport-konyv.hu/userfiles/file/sufaguzoxugatutatovalit.pdfIn PDF document text
- http://alhambra.kopanramen.com/uploads/files/67927764366.pdfIn PDF document text
- http://ambulatorioveterinariosanfrancesco.com/userfiles/files/19311632367.pdfIn PDF document text
- http://www.socfertenviron.org/cmsfile/contentfiles/tadojurotagugeroji.pdfIn PDF document text
- http://celyroknaterase.sk/editor_uploads/system/files/pabuza.pdfIn PDF document text
- http://dataprint.ie/uploads/file/93932958489.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_off0000b0d7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB0D7	17320 bytes
SHA-256: `f7cd20b6e479d2938158f3b5fac0d13b5fcc44144dc9fe9386f4ffb69f0e9605`
`font_01_sfnt_off0000dd5f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDD5F	10524 bytes
SHA-256: `285442d4261da39feabb0aa939b2afba5d28a55834192947e7b2449a17b75c94`
`font_02_sfnt_off0000f506.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF506	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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