PDF malware analysis — malicious · 1e572fcb012baa3f

MALICIOUS

PDF

79.3 KB Created: 2021-03-03 04:48:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14

MD5: 4333b0c4e5db7b1930176bae77f2a8c7 SHA-1: 6c9edacfcb2dd2eb27e15a32a6bc83b95ac127ce SHA-256: 1e572fcb012baa3f30afe1b4ae755c25d02d3476bb28ad3396c3a962c3291432

226 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1539 Steal Application Data

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it is a phishing lure. The heuristic 'SE_MFA_LURE' suggests the document attempts to harvest credentials or abuse multi-factor authentication. Numerous external links were found, many pointing to disposable domains, consistent with a link farm designed to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

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
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
MFA / one-time-code harvesting lure high SE_MFA_LURE

Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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/award?keyword=linksys+router+ea4500+manual PDF link annotation
- https://cdn.sqhk.co/nomavunut/bje2czj/badlands_national_park_map.pdfIn PDF document text
- https://cdn.sqhk.co/guvelebul/cmLidcM/abc_news_7_new_york_live.pdfIn PDF document text
- http://beautysale.site/my_kenmore_fridge_stopped_making_ice5wzs7.pdfIn PDF document text
- http://criticcxck.space/1511471890emhio.pdfIn PDF document text
- http://jakartapro.xyz/4883351348867t71.pdfIn PDF document text
- http://creditpm.com/vubozozurikapib4kxz.pdfIn PDF document text
- http://stebsmeh.space/chaalbaaz_full_movie_openloadj3b7m.pdfIn PDF document text
- http://leoidet.xyz/58273093236shvvb.pdfIn PDF document text
- http://livethailand.fun/war_planet_apes_tamil_dubbed_movieh3tfd.pdfIn PDF document text
- https://xafudilolara.weebly.com/uploads/1/3/4/7/134744509/9387638.pdfIn PDF document text
- http://limecash.xyz/tepixilibadwhf7k.pdfIn PDF document text
- http://onsideball.info/list_of_prefixes_and_suffixes_in_englishv2t8z.pdfIn PDF document text
- https://cdn.sqhk.co/wubunepan/hheUDMw/multi_games_new_arcade_machine.pdfIn PDF document text
- http://wellwork.site/muvuso3mzr5.pdfIn PDF document text
- https://cdn.sqhk.co/vatuliwa/dhbheKW/escape_plan_2_hades.pdfIn PDF document text
- http://makamar.xyz/ejemplos_de_dialogo_teatral_para_niosrspfz.pdfIn PDF document text
- https://cdn.sqhk.co/nakizenonetu/figdx4C/69811774799.pdfIn PDF document text
- http://stalekost.site/computer_network_book_in_hindi_downloademwxi.pdfIn PDF document text
- https://zakikubefetopu.weebly.com/uploads/1/3/2/6/132696201/5296624.pdfIn PDF document text
- https://cdn.sqhk.co/revinoxu/Egfig3d/spaceflight_simulator_1._4_apk_download.pdfIn PDF document text
- https://cdn.sqhk.co/satasevubu/qYicljb/switch_pros_3rd_gen_4runner.pdfIn PDF document text
- https://cdn.sqhk.co/paxabuxutujo/iajbjeD/laxero.pdfIn PDF document text
- https://cdn.sqhk.co/zuxosutuku/ejh67jc/mermaid_shell_handbag.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f7c5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF7C5	5292 bytes
SHA-256: `43987afd0179701fd44eb80f63db4f02d650db5a469f7f0cfda8cf691b3df8cf`
`font_01_sfnt_off000109c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x109C6	11084 bytes
SHA-256: `8d7d87f1d3bbb32cd8063a48c5215ebe1d53371d1877d4f4f07bec0c015c68c7`

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