Malicious PDF — malware analysis report

Static analysis result for SHA-256 c483844094f9735e…

MALICIOUS

PDF

87.5 KB Created: 2021-01-26 07:05:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ad9bc2011a40919148535050d714f3a3 SHA-1: a6fae9ba56703824a89e6d06596803fa397770a2 SHA-256: c483844094f9735eb7422982b8cded10be6186724d5b2f909a96a6e47916045e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://maypoin.ru/wb?keyword=minion%20masters%20draft%20rewards%202019 PDF link annotation
    • http://losinglotterynumbers.com/checklist_format_word_documentuz6tb.pdfIn PDF document text
    • http://nat-fru.space/95574591082x2h3n.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/2hfgdgj/towabirudu.pdfIn PDF document text
    • http://rekipeva.iblogger.org/44889247464.pdfIn PDF document text
    • http://sifasawiseziwi.iblogger.org/christmas_hallelujah_chords.pdfIn PDF document text
    • https://gesaseli.weebly.com/uploads/1/3/1/3/131379828/6056551.pdfIn PDF document text
    • http://hackins.site/bloons_tower_defence_331ctx.pdfIn PDF document text
    • https://gazezujebek.weebly.com/uploads/1/3/4/8/134881616/kikafenamujar-juzipesowo-kasiso-mokerazavubat.pdfIn PDF document text
    • https://jixejuterekafiw.weebly.com/uploads/1/3/4/5/134508928/dewozowe_daxegibadapa.pdfIn PDF document text
    • http://chelamela.org/59206022988w3b1r.pdfIn PDF document text
    • https://muzitotixigo.weebly.com/uploads/1/3/1/4/131407705/3992809.pdfIn PDF document text
    • https://nelibijejukeli.weebly.com/uploads/1/3/1/4/131437261/punifejevut.pdfIn PDF document text
    • http://helpcenter.business/5_seconds_of_summer_members_net_worth2duu2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493917/normal_5ff3817bc27dc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ritopagagibuxu.epizy.com/wubimixubumepoxepap.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_off000119da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119DA 5600 bytes
SHA-256: 06b9ea6f784b0202cd36501d77450d133c880fd63bb97dc733fb1e122f78179d
font_01_sfnt_off00012ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CE5 10688 bytes
SHA-256: 5854eb8e6cf713c325651e855a2053da17be21bfde8d4ed3641e5e6ca1b5d4fd