Malicious PDF — malware analysis report

Static analysis result for SHA-256 872088ec75a7b4c8…

MALICIOUS

PDF

73.1 KB Created: 2021-02-27 17:12:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 25693525d90ea836873de9de3c780c89 SHA-1: fb03620c9278e49e94c2df2670f73103acb0091a SHA-256: 872088ec75a7b4c885132b5e4e12542548db79da53aec25b67fc7083798a7fda
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://xajibur.ru/award?keyword=fisher+paykel+fridge+change+water+filter PDF link annotation
    • http://dle-tpl.site/9471976448uenj0.pdfIn PDF document text
    • https://dozogifelezu.weebly.com/uploads/1/3/4/3/134313369/630386.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469105/normal_5fc68b4793b4a.pdfIn PDF document text
    • https://bixikobitil.weebly.com/uploads/1/3/4/5/134525497/vafujerukewil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480579/normal_6024b7730f7a8.pdfIn PDF document text
    • http://xoroketogejuxe.mywebcommunity.org/lavet.pdfIn PDF document text
    • http://gifebadop.iblogger.org/7022216997.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446924/normal_6036b4dbd50f6.pdfIn PDF document text
    • https://bigubiforuse.weebly.com/uploads/1/3/5/3/135389938/3748284.pdfIn PDF document text
    • http://faceskinagainbeauty.xyz/what_is_object_oriented_programming_simple_explanation5j2iz.pdfIn PDF document text
    • https://werobipopopavuv.weebly.com/uploads/1/3/1/1/131163729/c52ed4f9a782821.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462037/normal_5ffe16e6b1c77.pdfIn PDF document text
    • http://rowexusaje.mypressonline.com/juxavago.pdfIn PDF document text
    • http://pijubunoze.22web.org/boney_m_music_video.pdfIn PDF document text
    • http://unonatur.space/72276371566fdgc7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467593/normal_601afda09343d.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/readings_for_sociology_8th_edition.pdfIn PDF document text
    • http://becloud.website/34112987972e23od.pdfIn PDF document text
    • http://jedilinosur.mywebcommunity.org/41975938448.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zogosugo.onlinewebshop.net/27244996174.pdfIn PDF document text
    • http://fuvogixerad.epizy.com/48622533523.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_off0000df41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF41 5628 bytes
SHA-256: 496a63924023e52d1ca6fe256d92073a8b316e9e59ffbb204cf4886f800bb356
font_01_sfnt_off0000f27c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27C 10652 bytes
SHA-256: fbfa37a3c9398e361a6db53f4a16cf42567475008b5f48eae0d4c9f65d44b56c