Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0923a47571a895c…

MALICIOUS

PDF

66.8 KB Created: 2021-01-24 06:53:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 2ce812cd32858d4c33aceece6ad270af SHA-1: 71cd977fab9988749f22c5f0d35f888888fe2920 SHA-256: c0923a47571a895cf3e2c2d849577c48c68ea2cb50fa65a6477c06e09b8cf969
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/aws?utm_term=jaspersoft+ireport+designer+3.+7.+6 In PDF document text
    • https://site-1175316.mozfiles.com/files/1175316/stranger_chat_anonymous_chat_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/voxedijudibo/Gwhghj3/bowling_tips_for_cricket_19.pdfIn PDF document text
    • https://gosasolana.weebly.com/uploads/1/3/4/5/134523876/sikuxog.pdfIn PDF document text
    • https://federadedeladol.weebly.com/uploads/1/3/4/6/134626130/4a49d2a34ea801.pdfIn PDF document text
    • https://site-1171989.mozfiles.com/files/1171989/joan_didion_play_it_as_it_lays_goodreads.pdfIn PDF document text
    • https://site-1174289.mozfiles.com/files/1174289/79318312709.pdfIn PDF document text
    • https://viduxetejogat.weebly.com/uploads/1/3/4/6/134600114/lidokejin_mupexi_fited_lorenukabivu.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/cIhhv5K/daddy_long_legs_movie_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/jawuraxexije/hdiaKjg/sugapuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kodeketabekem.epizy.com/nokaze.pdfIn PDF document text
    • http://fivamoxopel.epizy.com/telecharger_gta_v_android_aptoide.pdfIn PDF document text
    • http://lezipador.epizy.com/55839562263.pdfIn PDF document text
    • http://nosifunugiwes.epizy.com/norinumuvexilafexiwovuk.pdfIn PDF document text
    • http://fikikozazilut.rf.gd/wagusu.pdfIn PDF document text
    • http://sovuberexizizir.epizy.com/wodunukaxojoliwovadogemu.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_off0000c8cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8CD 5596 bytes
SHA-256: ec96acd092518ec8a228fcd9e1fe65d01b6d9511f65e436dc35ce15515b438e9
font_01_sfnt_off0000dbfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBFB 10004 bytes
SHA-256: 2af81a76de40395d53185458a694e4ff4efbbfc81fba1edf1849031f325e0b3a