PDF malware analysis — malicious · 9691a3905f9d8baa

MALICIOUS

PDF

82.3 KB Created: 2021-02-24 17:43:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14

MD5: 3f961058f66a3530b658df9f3ff8b039 SHA-1: 59d5ce4be9958517adffab2d27fb7575196ea3ec SHA-256: 9691a3905f9d8baa5c749c4fa9cd89846537c92bcd9bff017069310e0c8b066b

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to disposable domains, many of which are designed to appear as legitimate download pages for popular content like 'Twilight series'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 6

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://jottigo.ru/strik?utm_term=twilight+series+dual+audio+1080p+download PDF link annotation
- http://repair-kompov.ru/testere_dili_aslan_penesi_kullananlar_kadnlar_kulbwlfep.pdfIn PDF document text
- http://trikotoria.ru/legofiwomodidabepirly0zg.pdfIn PDF document text
- http://yogist.fun/agile_software_development_frees7xu8.pdfIn PDF document text
- https://mufosuxid.weebly.com/uploads/1/3/4/0/134040625/9511885.pdfIn PDF document text
- http://jumpfs.space/harry_potter_envelope_template_freexn76s.pdfIn PDF document text
- http://copyrightnotice-ig.com/wow_classic_shade_of_eranikus_guides10ma.pdfIn PDF document text
- http://yozi.store/batalanobuzaript8lf9.pdfIn PDF document text
- http://retys.space/paraphrasing_worksheets_for_high_schooliozns.pdfIn PDF document text
- https://zikotidule.weebly.com/uploads/1/3/4/6/134604350/ronafek_zinevinaram_sozetosoxeweda.pdfIn PDF document text
- http://lnstagramsupportlives.com/how_do_i_connect_my_canon_tr4522_printer_to_wifiztfo0.pdfIn PDF document text
- https://seboneluwisog.weebly.com/uploads/1/3/4/3/134368334/duvoz.pdfIn PDF document text
- http://serdyukov.pro/manageengine_servicedesk_plus_9._4_admin_guideb3kyd.pdfIn PDF document text
- http://abanca-electronica.com/nopijejudamifurolom9tyn.pdfIn PDF document text
- http://ranomurivokav.22web.org/sudelojorenujapasideron.pdfIn PDF document text
- http://idealslim-italiaofficial.site/how_do_you_cook_beef_ribs_on_a_smokerw4ycg.pdfIn PDF document text
- https://dijekoko.weebly.com/uploads/1/3/5/3/135315120/tojugi.pdfIn PDF document text
- http://hellesypakk.online/free_printable_attendance_forms_for_teachers30rie.pdfIn PDF document text
- http://repochka.site/circulatory_system_worksheets_for_kindergartenc2p62.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://pazalijof.epizy.com/femuburagufadiboteraz.pdfIn PDF document text
- http://jokipuzovorije.epizy.com/38561883289.pdfIn PDF document text
- http://vokutenux.epizy.com/zaxojitiwexeterov.pdfIn PDF document text
- http://gevorewububew.epizy.com/40347746177.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f0a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF0A4	6744 bytes
SHA-256: `0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63`
`font_01_sfnt_off0001018b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1018B	5652 bytes
SHA-256: `1a9755684f1d5da688215d62e9e47af7560e96b8a2184e99fd389eb8fb26ea13`
`font_02_sfnt_off000114cd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x114CD	11288 bytes
SHA-256: `6eaa1d60b3fe2dbde525d4fd3dfe5bfbe8e79388dc81aac18cd4e409dc9a61de`

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