PDF malware analysis — malicious · 024f5eb803dd4aec

MALICIOUS

PDF

83.2 KB Created: 2021-03-25 07:37:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10

MD5: bd0d968927b893a5c3215ac909956a53 SHA-1: 5286cbbcf6236c0b17f1042c3414702aaf5201eb SHA-256: 024f5eb803dd4aec314ac10e3e2afe995110f453b99565bda065f9f843f78cc1

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF that contains numerous embedded URLs, many of which point to disposable hosting or suspicious domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of external URIs and a link farm heuristic suggests the document's primary purpose is to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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://mezovuduw.ru/wix?keyword=existence+abbi+glines+pdf+free+download PDF link annotation
- https://static.s123-cdn-static.com/uploads/4501963/normal_60075024b8f3d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4423700/normal_60513d45349b3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412154/normal_605bdd997ebfe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479462/normal_6045c695233cd.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4365627/normal_5ff37facdb4f9.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4502870/normal_5fce4da04efe3.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4484380/normal_5fffc2146b3a1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449793/normal_6050f4c2676a2.pdfIn PDF document text
- http://tosety.xyz/can_a_r12_recovery_machine_be_convert_to_r134a0ucai.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390659/normal_6031cf5e2e202.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490380/normal_602da9655cb5a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4424662/normal_6031b1164711a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4422909/normal_600bf1c0e9aa8.pdfIn PDF document text
- http://xudisoda.66ghz.com/40211164316.pdfIn PDF document text
- http://erogan-encolumbia.site/jefibemigucz19o.pdfIn PDF document text
- http://telemprom.xyz/diamond_infinite_edge_pro_vs_pse_stinger_maxplzc6.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- http://biledimetiwen.epizy.com/freeze_top_3_rows_of_excel_spreadsheet.pdfIn PDF document text
- http://baduvebeketuwo.epizy.com/19833423851.pdfIn PDF document text
- http://zotawof.rf.gd/amplifiers_and_oscillators.pdfIn PDF document text
- http://mepulufe.epizy.com/love_you_animated_gif.pdfIn PDF document text
- http://zimeketoxera.epizy.com/dungeon_builder_s_guidebook.pdfIn PDF document text
- http://supetok.rf.gd/formal_prom_dress_shops_near_me.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://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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e240.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE240	5368 bytes
SHA-256: `978bd0b4b073b450036deb0728222647096cdfbf0e89dc1bd69c46fc2249de0b`
`font_01_sfnt_off0000f49d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF49D	11004 bytes
SHA-256: `49517ae75c787c975916709c819c68e6ab9e59ad6032027e2badd48073b6a749`
`font_02_sfnt_off000119f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x119F8	16192 bytes
SHA-256: `b80dcff4b26782ff2bd1ed82e01ce9053ba91b1a5afb9bea673378648d26bec5`
`font_03_sfnt_off00012f08.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12F08	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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