Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca57d864dd9d3095…

MALICIOUS

PDF

68.0 KB Created: 2021-02-19 17:03:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f848574881da84ee45d90298055a9e62 SHA-1: 90327b1d39aa37ee43e7b7252e9059fe75328e70 SHA-256: ca57d864dd9d3095a16359f9698be81cc098f707491f92cd750e2df6c4b48f6d
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://seumenha.ru/wb?keyword=descargar%20libro%20el%20camino%20del%20artista%20pdf PDF link annotation
    • https://tawusizigegik.weebly.com/uploads/1/3/3/9/133997505/sevuwiruv.pdfIn PDF document text
    • https://tutonaxubetu.weebly.com/uploads/1/3/5/2/135296536/nudukiko_noxexam_kixabagude.pdfIn PDF document text
    • https://cdn.sqhk.co/sakupiraf/hYji0TR/dragon_ball_super_devolution_hacked_arcade_games.pdfIn PDF document text
    • http://pozesex.iblogger.org/bumelugiju.pdfIn PDF document text
    • https://xatikofaf.weebly.com/uploads/1/3/0/8/130814669/sinim_wivuraw_lekasitumela_safebudar.pdfIn PDF document text
    • http://meweremidef.iblogger.org/52524034344.pdfIn PDF document text
    • https://buzoraxuv.weebly.com/uploads/1/3/4/3/134366179/dazusarogowunefe.pdfIn PDF document text
    • http://idealica-columbia.site/ti_36x_pro_calculator_batteryiihqq.pdfIn PDF document text
    • https://galebekamabe.weebly.com/uploads/1/3/4/3/134305591/bifilibufeludof.pdfIn PDF document text
    • http://topdouche.xyz/dometic_rv_ac_repair_manual2hshi.pdfIn PDF document text
    • https://mafenipo.weebly.com/uploads/1/3/4/8/134879688/16cf87e118fe4d5.pdfIn PDF document text
    • https://cdn.sqhk.co/jemowevu/74hcIhj/mx_player_free_download_old_version.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425910/normal_5ff5a56a27a57.pdfIn PDF document text
    • https://gofabede.weebly.com/uploads/1/3/1/4/131453232/c81f136f5a0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zerakunutage.epizy.com/mumalakumipefepoxekufel.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_off0000c9cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CD 5612 bytes
SHA-256: 8f0ea8ed4d05e05cf10c04618e3a6cd54abd29d965cd2d2b4ccc68174e6cd68e
font_01_sfnt_off0000dcca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCA 11160 bytes
SHA-256: 32fdc7db878e320d15c1ded559d96a164fdcfec79d1dc749dc11e5da84a16d3e