Malicious PDF — malware analysis report

Static analysis result for SHA-256 b32764d251ac2af4…

MALICIOUS

PDF

70.6 KB Created: 2021-02-20 11:28:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6307b1f5e9e2a261f5d12a0b9568ef5b SHA-1: 5b85a469f643ec380db5917c95d334e209409fbe SHA-256: b32764d251ac2af4eba4e363db6aa2daab699a09dbe5b7491807019aa4a45487
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/123?utm_term=how+to+change+date+and+time+on+timex+marathon+watch PDF link annotation
    • https://tigidejuremu.weebly.com/uploads/1/3/4/5/134502839/3955210.pdfIn PDF document text
    • https://cdn.sqhk.co/nevupediwix/ZjezU5B/hideo_kojima_twitter_meme.pdfIn PDF document text
    • http://fbcopyright-center.com/algebra_nation_workbook_answers_section_1dv05m.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/bghkjjZ/retro_nes_emulator_games.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/dgh5mks/841150744.pdfIn PDF document text
    • https://gegoviboz.weebly.com/uploads/1/3/4/8/134876631/wibajituni.pdfIn PDF document text
    • http://matcobzor.ru/30722247936cyh9k.pdfIn PDF document text
    • https://xugowapowafav.weebly.com/uploads/1/3/0/7/130775127/vafikidoviwepi.pdfIn PDF document text
    • http://gefibavi.22web.org/chrome_plugins_flash_player.pdfIn PDF document text
    • http://1xbet-sportstavki.fun/brochure_design_inspiration2kasb.pdfIn PDF document text
    • https://tobalewaluwe.weebly.com/uploads/1/3/4/4/134437424/bopumovepipima-fagudev.pdfIn PDF document text
    • https://dizuvojuxi.weebly.com/uploads/1/3/1/1/131163617/1266dd5f.pdfIn PDF document text
    • https://zakazorexan.weebly.com/uploads/1/3/1/4/131407051/51af1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/rajkot_awas_yojana_online_form.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/veterans_day_worksheets_for_5th_grade.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_off0000d3c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C1 5264 bytes
SHA-256: 6b7df40709fa2df44657dc92f88ee747785e9c7a01be24aca0068519134d4e77
font_01_sfnt_off0000e58f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE58F 11828 bytes
SHA-256: 3fbec86da53ce76b04dd7e84f5f5a503750c69c82e293880933fea7df6944ce0