Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e5fac3a0ceb469f…

MALICIOUS

PDF

70.5 KB Created: 2021-02-09 22:16:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d8f839c52d636a8b979d555c21fc3a46 SHA-1: 74eb4e2588d90bd6bd2d164e4e8996471389db84 SHA-256: 8e5fac3a0ceb469fe4c7b5e241e69fbb736a37c31ff87d07f4faca199a2eb096
134 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/aws?utm_term=game+bully+apk%252B+data+android+revdl PDF link annotation
    • http://hhizmet.com/11546179396b4cir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462073/normal_5ffe1394c1257.pdfIn PDF document text
    • http://covid-19online.site/vodifovifasofisuzevij6oltp.pdfIn PDF document text
    • http://moshon.space/62264099914f00px.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490725/normal_5fc5acdcb6ef4.pdfIn PDF document text
    • http://avbox.org/37340583508v8r2d.pdfIn PDF document text
    • http://begotilujaxijis.iblogger.org/zojuv.pdfIn PDF document text
    • http://ses-sanobrabotka.ru/17907889197cy7bj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454047/normal_5fe58a27c23a0.pdfIn PDF document text
    • http://www.revIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://misosemarimo.rf.gd/disputing_bad_debt_on_credit_report.pdfIn PDF document text
    • http://zofutigo.epizy.com/jozusamapukiwux.pdfIn PDF document text
    • http://gogositanisewu.rf.gd/pibozumuzinabi.pdfIn PDF document text
    • http://jizonizop.rf.gd/lusukubul.pdfIn PDF document text
    • http://pejefovad.epizy.com/we_cordially_invite_you_template.pdfIn PDF document text
    • http://xivutunitilema.epizy.com/cec_install_guidelines_v12.pdfIn PDF document text
    • http://nufufud.epizy.com/root_call_blocker_pro_apk_cracked.pdfIn PDF document text
    • http://gigivixegaxun.epizy.com/bootstrap_responsive_template_tutorial.pdfIn PDF document text
    • http://xagejedidupomup.rf.gd/duzelunibusinuno.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_off0000d511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD511 5324 bytes
SHA-256: cf6a0e79d49502aa933463a0180c4c4fb0ccdec133c7a4457c36a8e71fbac5b4
font_01_sfnt_off0000e724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE724 11024 bytes
SHA-256: b3ff7fdf6c7ad2e4c338886a9c0fc5456deea58d7cee9d8035c931bce52fc324