Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b558e44aceab1a4…

MALICIOUS

PDF

68.4 KB Created: 2021-02-19 02:49:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3395fe382afc545af58cbc95ce23c542 SHA-1: 9fa6cd48e1cb3e207d4c09e2a041dcc09b3d4355 SHA-256: 9b558e44aceab1a4f9122ec4d98e39396dcf2704a6516ad0eb3793903e76c0c3
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=glencoe+science+physics+answers PDF link annotation
    • https://kogijusixi.weebly.com/uploads/1/3/5/3/135312463/xoreroresisinu_wunepasuzi_sibumijun.pdfIn PDF document text
    • http://microbestdigitalmeter.xyz/41907789322nlmqs.pdfIn PDF document text
    • http://getallcreditscores.info/bukedde_tv_app0i1ie.pdfIn PDF document text
    • https://zosixilerav.weebly.com/uploads/1/3/1/8/131856356/wuvut-tirovowebezog-ponagefuf-gitem.pdfIn PDF document text
    • https://gozerezujokosas.weebly.com/uploads/1/3/4/8/134856803/gadafuxazop.pdfIn PDF document text
    • https://babulavired.weebly.com/uploads/1/3/0/7/130775389/6436071.pdfIn PDF document text
    • http://parralax.net/76447456669iwewe.pdfIn PDF document text
    • https://jinijazi.weebly.com/uploads/1/3/4/6/134668286/bezowuke.pdfIn PDF document text
    • https://nitelozam.weebly.com/uploads/1/3/5/3/135308565/zadiforofupetizaz.pdfIn PDF document text
    • https://cdn.sqhk.co/sirepajaku/nhfjbB6/ant_factory_download.pdfIn PDF document text
    • http://phillipen.online/kufipan4i91.pdfIn PDF document text
    • https://cdn.sqhk.co/bebomopakax/ar471ie/pocket_door_kitchen.pdfIn PDF document text
    • http://help-feedback-amzn8.xyz/38779292643u5tcp.pdfIn PDF document text
    • https://fojexoduzasob.weebly.com/uploads/1/3/4/6/134693365/fevudelevabidotid.pdfIn PDF document text
    • https://kirugalepolofaw.weebly.com/uploads/1/3/4/3/134340862/ponigafine.pdfIn PDF document text
    • https://bewanabexujafo.weebly.com/uploads/1/3/6/0/136050633/migarizaluniwiwesuxi.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/bubisifapagefe/6195166151.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/best_antivirus_for_android_mobile_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/bulawulot.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/saxeduxuxul.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_off0000d055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD055 5244 bytes
SHA-256: e687b902f9bce16238cc7182af85837e004112dbd613e9ccc8e7a77a2ecec413
font_01_sfnt_off0000e243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE243 10000 bytes
SHA-256: d7479ac6b434a2c3920b7c976e2df947f8bd411cc07873ddb585b27627ab0174

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