PDF malware analysis — malicious · 5d48be1b00718db0

MALICIOUS

PDF

86.6 KB Created: 2021-03-27 21:33:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 367827e1610a154f214be6459ee80ec1 SHA-1: b0366a5549dfa23a957d236ea42867902c613be2 SHA-256: 5d48be1b00718db0d9147c4136ccb4f5def19675716467fdf88e6d5b7be8f6ae

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs pointing to disposable domains, many of which are part of a link farm. 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 content.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://lozipotod.ru/aws?utm_term=drawing+tutorial+easy+step+by+step PDF link annotation
- http://keep-travel.com/duvupoziruptkdz.pdfIn PDF document text
- http://keepqifi.site/haiku_lesson_plan_ks2tzixi.pdfIn PDF document text
- http://choosenews.space/birbal_kannada_movielcjmr.pdfIn PDF document text
- http://7lessons.website/area_of_a_circle_worksheet_with_answersxlvwl.pdfIn PDF document text
- https://robivobaxo.weebly.com/uploads/1/3/0/8/130873737/danas.pdfIn PDF document text
- https://gegoviboz.weebly.com/uploads/1/3/4/8/134876631/tesafaxetamodu_sovirat_ranob_votogepile.pdfIn PDF document text
- https://cdn.sqhk.co/suwinodujeja/rhijio3/install_video_looper_raspberry_pi.pdfIn PDF document text
- https://fosobezi.weebly.com/uploads/1/3/4/8/134898374/rikexek.pdfIn PDF document text
- http://deflecfcvy.best/179789818363q1tr.pdfIn PDF document text
- http://sodahq.pro/xagevokagirugasudesevefelxex9e.pdfIn PDF document text
- http://goodnaturak.space/69223719063hntf4.pdfIn PDF document text
- https://cdn.sqhk.co/kufejagefep/chcUigK/dipipivutesini.pdfIn PDF document text
- http://getsol.xyz/6720772684115bt2.pdfIn PDF document text
- https://jevixivuxed.weebly.com/uploads/1/3/4/6/134622771/3555833.pdfIn PDF document text
- https://cdn.sqhk.co/mamevugixej/icFxnji/48480924474.pdfIn PDF document text
- https://cdn.sqhk.co/vewimidipiv/pdhakij/short_hairstyles_for_round_faces_black_natural_hair.pdfIn PDF document text
- https://cdn.sqhk.co/lozuzupadis/dblhaje/offline_2_player_games_xbox_one.pdfIn PDF document text
- http://pelistens.xyz/166969268846ql6c.pdfIn PDF document text
- http://shoplus.info/40791734991hrsq.pdfIn PDF document text
- http://evilcheats.fun/agenda_de_boda_para_imprimir_2019sryri.pdfIn PDF document text
- https://fefolidagemilo.weebly.com/uploads/1/3/1/4/131453124/54a77.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
- https://uploads.strikinglycdn.com/files/a83f9422-ddfb-4cae-ae30-a7017e794fe0/bellus_3d_face_app.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0be03aa8-c908-49bc-849e-0d4e1ea9650e/what_is_a_class_c_certification.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/caa7d965-f1b9-4ad0-aee6-8d047b055075/21800918318.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/df2d6abf-6155-4156-b51e-914b77c04fa2/sepotidami.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00010979.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10979	5204 bytes
SHA-256: `36b9894501266008b1c9642600ef0dcdaa759c0da131d2db551a5873fa5bc06a`
`font_01_sfnt_off00011b4d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11B4D	10348 bytes
SHA-256: `9156fb2b43414a62af6ebc5c500982815c681601f4764ccef4c6071ae37cbb9c`
`font_02_sfnt_off00013eb6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13EB6	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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