Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff2d08e5f4542a63…

MALICIOUS

PDF

71.1 KB Created: 2021-02-07 13:40:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d1e344a061596847f2dc6a20e328ff66 SHA-1: 864f203660cb4afe2e31f1f32be284d96b7ab120 SHA-256: ff2d08e5f4542a633d9e67085e2d06b9c527dfca60a12627ddfc43126af756b7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://jacksth.ru/aws?utm_term=galactic+civilizations+iii+guide PDF link annotation
    • https://nunesevafarub.weebly.com/uploads/1/3/0/8/130874378/8764059.pdfIn PDF document text
    • https://bogogumufen.weebly.com/uploads/1/3/4/0/134018830/parupa-muviwata.pdfIn PDF document text
    • https://bolifalaloken.weebly.com/uploads/1/3/1/4/131438202/rogivurijadijom_punelaribi_fegivanifugewob_korakix.pdfIn PDF document text
    • http://nemesun.iblogger.org/17477535783.pdfIn PDF document text
    • https://nomukemometikuf.weebly.com/uploads/1/3/1/4/131483138/a682c08a.pdfIn PDF document text
    • https://luragelekow.weebly.com/uploads/1/3/4/3/134377287/004490f.pdfIn PDF document text
    • https://vidiguwases.weebly.com/uploads/1/3/4/3/134347373/64ab834d.pdfIn PDF document text
    • https://pubasozivo.weebly.com/uploads/1/3/0/8/130813448/pupuxonapi.pdfIn PDF document text
    • https://zanirifut.weebly.com/uploads/1/3/1/4/131407922/senafanoxuluj.pdfIn PDF document text
    • http://wivejudotimog.22web.org/emulator_android_ringan_untuk_netbook.pdfIn PDF document text
    • https://zaxizibu.weebly.com/uploads/1/3/4/6/134672664/bogejodapog.pdfIn PDF document text
    • https://lulapusorifat.weebly.com/uploads/1/3/1/4/131436971/a95c62e130a4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vitixageseda.rf.gd/aladdin_1992_movie_songs.pdfIn PDF document text
    • http://gikunipif.epizy.com/professional_telephone_answering_machine_messages.pdfIn PDF document text
    • http://sugexure.rf.gd/django_login_template_example.pdfIn PDF document text
    • http://lepefefila.epizy.com/buluxuraxuxaxirelu.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/96020213258.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/guided_segway_tours_new_york_city.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB11 5152 bytes
SHA-256: 79880741ceba1503104914da430e918f8c12a7b3d100e7953902402191622681
font_01_sfnt_off0000ecbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBF 10080 bytes
SHA-256: f0dc973485af4b3e4cbabc99f8a3a4efb68775525c3236f87dd98145bf10c932

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