PDF malware analysis — malicious · 83dd454ce0ff780f

MALICIOUS

PDF

85.3 KB Created: 2021-03-17 19:06:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ee08e1c4ee476cbc13b19c205aa677bd SHA-1: 9e3847dcf7eef6eb58f7454930297d178f66135e SHA-256: 83dd454ce0ff780fd98e118c41f516d7e6185229db5db0411effddadae1fc437

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL pointing to 'zajinet.ru'. This URL is likely used to redirect the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, and the embedded URL is the primary indicator of compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://zajinet.ru/wix?keyword=dunham+castle+wayne+il+history
- https://static.s123-cdn-static.com/uploads/4481173/normal_5fcc2c4be4bfb.pdf
- http://zegosuvavanow.22web.org/que_es_refulgentes_diccionario.pdf
- http://wulixiv.sportsontheweb.net/ethiopian_grade_10_biology_textbook_download.pdf
- https://cdn-cms.f-static.net/uploads/4488807/normal_602a0d9adc876.pdf
- http://xumupizaxuto.scienceontheweb.net/boss_ls_2.pdf
- http://kiwenalod.medianewsonline.com/pumivekogogim.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/donake/losanavivinunisidimila.pdf
- https://uploads.strikinglycdn.com/files/adc040b2-d1fc-4423-bf99-948a6244d7ef/tenergy_lipo_balance_charger_blinking_red.pdf
- https://s3.amazonaws.com/godoremitiwuja/fekuzugajefiligoxenolorov.pdf
- https://uploads.strikinglycdn.com/files/0add6572-df56-4f37-8a50-ebff5a4f4950/87433374184.pdf
- https://s3.amazonaws.com/lanaladu/rejesazovuzujusuliruxi.pdf
- https://s3.amazonaws.com/mokuwanibof/google_sheet_template_for_project_plan.pdf
- https://uploads.strikinglycdn.com/files/df94d897-97b4-4f09-a9e6-ee6d625fa40c/is_johnny_silverhands_gun_good.pdf
- http://gisipusizen.rf.gd/civil_engineering_interview_questions_and_answers_quora.pdf
- https://s3.amazonaws.com/fusopoxipo/nutritional_information_burger_king_veggie_whopper.pdf
- https://s3.amazonaws.com/tiluwisulepam/nolenerenabi.pdf
- http://fefezaw.rf.gd/rerojogogevezimenese.pdf
- https://s3.amazonaws.com/gupawupigawono/41262282561.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0001113d.bin` `703bcad45e56cf2560c5a859440a38b14f4994403157476c19f18f501d853546`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1113D	5232 bytes
`font_01_sfnt_off000122f7.bin` `b5fd4b7214a12403faed74585b3bab99aa0ed51fa7531d850a4b81227ccfaf45`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x122F7	10864 bytes

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