PDF malware analysis — malicious · e879378e7a08bb71

MALICIOUS

PDF

82.4 KB Created: 2021-09-24 06:25:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 0117e9623c8e03c1e9cb259e92adbafc SHA-1: 7d92cf5a82f7a2d32f67a3dcea1d3f5ff4f40cc2 SHA-256: e879378e7a08bb717a3925dfd9b6b91c2dfb026fefb75cbfe9e0a01c395a2a56

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are part of a link farm on disposable hosting. The 'SE_CALLBACK_LURE' heuristic strongly suggests a callback phishing or tech-support scam, aiming to trick users into calling a provided phone number. The ML classifier and ClamAV detection further confirm its malicious nature.

Machine Learning

Nyx PDF Classifier malicious score 0.9964

Heuristics 7

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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://drafthe.ru/uplcv?utm_term=android+dialer+codes PDF link annotation
- https://prtl.pl/userfiles/file/22255011105.pdfIn PDF document text
- https://miltonmattox.com/userfiles/file/zagalemoterapi.pdfIn PDF document text
- https://nepaltrekkinginhimalaya.com/assets/userfiles/files/pasobinozavexogawil.pdfIn PDF document text
- https://peiitw.com/Upload/ckeditor/files/49305506300.pdfIn PDF document text
- https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/r85uqsl93nb2kgas6n4k4nt5li/zitodilevugimoziki.pdfIn PDF document text
- http://ms-domino.eu/images/file/files/tizumosinagowokati.pdfIn PDF document text
- http://pizzeria-millemiglia.de/app/webroot/img/editor/file/zidejunafitopusa.pdfIn PDF document text
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/161429e8227364---2253402881.pdfIn PDF document text
- http://montazerangroup.com/uploader/file/47520813015.pdfIn PDF document text
- http://razaviota.ir/basefile/razaviotair/files/witeputomidek.pdfIn PDF document text
- https://www.puskinas.lt/ckfinder/userfiles/files/30671241766.pdfIn PDF document text
- http://timnhanhonline.com/upload/files/38290917066.pdfIn PDF document text
- https://galerieportelouise.be/userfiles/files/49303690375.pdfIn PDF document text
- http://teusz.pl/UserFiles/file/19635356469.pdfIn PDF document text
- http://www.farmaciapenil.es/userfiles/files/xubiluwoxuvigonamofi.pdfIn PDF document text
- https://fotoprint.lv/downloads/file/64198041920.pdfIn PDF document text
- http://badaranquehablar.com/userfiles/files/38318667377.pdfIn PDF document text
- http://studiopetrilli.it/userfiles/files/raxoda.pdfIn PDF document text
- https://minervatech.work/js/ckfinder/userfiles/files/gulajiwe.pdfIn PDF document text
- http://tdvvietnam.vn/webroot/img/files/danopewetugikamunasunisug.pdfIn PDF document text
- https://pastelbuilders.com/userfiles/file/57648711707.pdfIn PDF document text
- http://geriatriccarenewjersey.com/userfiles/files/kujabilidafivowe.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_off0000dee3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDEE3	10244 bytes
SHA-256: `d0b44de64acd8f2d42ea927ab168357939f091adade075efb79c4d864588dc60`
`font_01_sfnt_off0000f5f4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF5F4	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00010e06.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E06	17848 bytes
SHA-256: `838063dc1ec23c8408054f193da0352241c85f53743a101eea90017b0faae5e6`

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