PDF malware analysis — malicious · 4eac79bd70d1e4b9

MALICIOUS

PDF

86.8 KB Created: 2021-02-28 08:52:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17

MD5: a60cb902907a5422dd60eb397e482e64 SHA-1: 25f0aaf5b4c7f8b2119adee7b4d152cd961d95c2 SHA-256: 4eac79bd70d1e4b96ddb446d0bc37cf8eb7ecf56fb7a235952077441ead05516

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains multiple external URIs, including one at `https://pelibifir.ru/award?keyword=monster+nicki+minaj+verse+download`, which is likely part of a phishing or scam campaign. The PDF's structure and embedded links suggest it functions as a link farm to distribute traffic to various potentially malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://pelibifir.ru/award?keyword=monster+nicki+minaj+verse+download PDF link annotation
- https://garegijewavib.weebly.com/uploads/1/3/4/3/134389285/24302724a2910a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4371010/normal_5fff934fc22a5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4487897/normal_5fefec435ea67.pdfIn PDF document text
- https://cdn.sqhk.co/wexunaveb/hij2qjh/evolution_of_species_gameplay.pdfIn PDF document text
- https://larunigilusevim.weebly.com/uploads/1/3/5/3/135320243/xowatatubogazod_toxum_nixip_fafoxapaguvigif.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4380536/normal_5ff9ce9d70588.pdfIn PDF document text
- https://cdn.sqhk.co/jeposanop/idjOibG/64781045719.pdfIn PDF document text
- https://lanoxujuzon.weebly.com/uploads/1/3/4/6/134630121/kurosovekim.pdfIn PDF document text
- https://cdn.sqhk.co/terasovo/ihR4icE/momogelexesakurevomado.pdfIn PDF document text
- https://cdn.sqhk.co/razotefo/hbvje8X/celine_dion_all_songs_offline_apk.pdfIn PDF document text
- https://cdn.sqhk.co/nivunufozub/bottigJ/62592474691.pdfIn PDF document text
- https://cdn.sqhk.co/tejikeluz/bmAGggF/rajunevuge.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4485163/normal_602c5a7d6b8c6.pdfIn PDF document text
- https://cdn.sqhk.co/wogokodu/aWiiibt/vido_lyrical_video_status_maker_mod_apk.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://jusudab.epizy.com/murmurs_of_earth.pdfIn PDF document text
- http://nelibusanexiput.epizy.com/thank_you_for_the_quick_reply_email.pdfIn PDF document text
- http://vininotubosom.epizy.com/manejo_del_cultivo_de_arveja.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000de32.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE32	6812 bytes
SHA-256: `2e771034e64b7dadf41480d8417b3af3f26059031e7e821a3334dc496a9d7390`
`font_01_sfnt_off0000ef69.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF69	5380 bytes
SHA-256: `c785f079c9fcab13754c859e761b89d8f44c80fa63d7f4fc48407ec4b86967c3`
`font_02_sfnt_off000101bb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x101BB	4204 bytes
SHA-256: `33fb14e6dff2927403ba61e6ce1ccbf49f2f606bc025d86b1b860ad19827bb5e`
`font_03_sfnt_off0001119f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1119F	10836 bytes
SHA-256: `58201e7056322db962ffa8b4438d5499d0d117de942afecaf8218f45950e6a0d`
`font_04_sfnt_off000136f7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x136F7	16372 bytes
SHA-256: `c10d494a1e235dfec90f5f88551f80e9efeb68dd5dcd8a9d9b5cff00988d6255`

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