PDF malware analysis — malicious · c3cdcbb234843f7a

MALICIOUS

PDF

89.2 KB Created: 2021-03-22 07:23:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: c368c6a5a698cffef1a02c9d0f72c823 SHA-1: 138b9e2f4fb0a317f424786d26c8464901f729f0 SHA-256: c3cdcbb234843f7a02ad06559bda2dcd28cf4bd30b84c01c2aee284cef6886b2

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to disposable hosting and are likely part of a phishing or link-farming scheme. The PDF structure and the presence of external URIs suggest an attempt to redirect users to malicious websites, likely for credential harvesting or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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://dugedepap.ru/award?keyword=thanissaro+bhikkhu+pdf PDF link annotation
- http://zhk-samolet-krasnodar.info/logitech_m325_bluetooth_verbinden6k5xz.pdfIn PDF document text
- https://cdn.sqhk.co/xevowuto/es6qEkv/us_political_news_today.pdfIn PDF document text
- https://cdn.sqhk.co/falugojafat/jjf2ghK/new_york_times_co_stock_price.pdfIn PDF document text
- http://barcaporirternet-interbank-pe.com/punipite05bm4.pdfIn PDF document text
- http://zotexezedomukuj.iblogger.org/forikatigu.pdfIn PDF document text
- http://raifaisentgo.online/ruzibinbuw3i.pdfIn PDF document text
- http://creditscorehelp.info/how_to_program_my_charter_remote_to_my_sanyo_tvncvsu.pdfIn PDF document text
- https://cdn.sqhk.co/nemanive/hhIwKhg/77549999619.pdfIn PDF document text
- https://cdn.sqhk.co/sadopore/jjfsRig/40388215865.pdfIn PDF document text
- http://ek-arenda.ru/the_chrysalids_movie0e9eu.pdfIn PDF document text
- http://creamwalls.online/semuxojobbewut.pdfIn PDF document text
- https://cdn.sqhk.co/gexedamej/H1ghzgd/deadly_traps_premium_adventure_of_hell.pdfIn PDF document text
- http://123dutch.com/cub_cadet_526_swe_manualbohnr.pdfIn PDF document text
- https://cdn.sqhk.co/xebosulog/NmllChg/kunipinilusapijavaj.pdfIn PDF document text
- https://cdn.sqhk.co/posaleren/bhgfljb/66127105648.pdfIn PDF document text
- http://busforpay.online/oracle_database_19c_11git08h.pdfIn PDF document text
- http://funogager.22web.org/homemade_alfredo_nutrition_information.pdfIn PDF document text
- http://jakartapro.xyz/how_to_enter_promo_code_on_dunkin_donuts_appd28uh.pdfIn PDF document text
- http://lnstagramverifiedsbadgesforms.com/best_english_to_spanish_translation_onlinet2rp9.pdfIn PDF document text
- https://cdn.sqhk.co/degixodip/6vicje6/36245363474.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.opentle.orgIn PDF document text
- http://xusijaxux.rf.gd/blank_calendar_template_november_2019.pdfIn PDF document text
- http://wegarasuw.epizy.com/lopomuwazizi.pdfIn PDF document text
- http://zimewukefaja.rf.gd/what_are_some_male_greek_names.pdfIn PDF document text
- http://kobitosen.epizy.com/angular_6_form_validation_only_numbers.pdfIn PDF document text
- http://zinebozozapi.rf.gd/information_asymmetry_market_failure.pdfIn PDF document text
- http://fuginifetulad.epizy.com/13215874459.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0001030f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1030F	5248 bytes
SHA-256: `6daabeffc797cf61c6974587edcef39428c2a04469453c5ebd8402dea552677b`
`font_01_sfnt_off000114d2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x114D2	9256 bytes
SHA-256: `4cec31f29976a23b17aecc955c868711fb6589aecc441eb8be6fa8bfdc784c80`
`font_02_sfnt_off00012e8a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12E8A	12244 bytes
SHA-256: `5951677316bb02461118ffa3b322d76aa0e7b11d639babff2afc29f5e0ef0e4f`

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