Malicious PDF — malware analysis report

Static analysis result for SHA-256 288736452be4a348…

MALICIOUS

PDF

67.7 KB Created: 2021-02-27 12:27:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a8bc0fb4480991e8c47f7e522f79e19d SHA-1: b8a7ca4bc600bfa1878fa7333e8931ed34eb91d8 SHA-256: 288736452be4a348d8a2668231053a07f87984bd8a08af2ed05f069d89572572
134 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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://druttle.ru/wix?keyword=oatey+perfect+slope+extension PDF link annotation
    • http://safijejog.mygamesonline.org/kosal.pdfIn PDF document text
    • http://kovemiwixipogaf.66ghz.com/persuasive_essay_school_uniforms_should_be_mandatory.pdfIn PDF document text
    • http://delinapod.mypressonline.com/sony_xplod_10_inch_subwoofer_1100w_review.pdfIn PDF document text
    • https://dikubudekoguzo.weebly.com/uploads/1/3/1/8/131857294/daxobidejimoku.pdfIn PDF document text
    • https://jetukuzimol.weebly.com/uploads/1/3/2/6/132695660/146d00a4c1f.pdfIn PDF document text
    • http://sowadegepixu.22web.org/descargar_concordancia_strong_en_espaol_para_e-sword.pdfIn PDF document text
    • http://bidizujimon.getenjoyment.net/mp3_murottal_30_juz_free_download.pdfIn PDF document text
    • http://zekojotewakugag.mypressonline.com/free_online_gre_prep_materials.pdfIn PDF document text
    • https://nopuwilimo.weebly.com/uploads/1/3/4/4/134490360/vuzisefedon-vunexigako.pdfIn PDF document text
    • https://gasilarax.weebly.com/uploads/1/3/4/5/134595303/7774270.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/dipozaravovasegunox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nadiripu.epizy.com/tipekalevesokofigumovaz.pdfIn PDF document text
    • http://vubixijugisoloz.epizy.com/class_schedule_template_free.pdfIn PDF document text
    • http://sesoxevanadike.epizy.com/coliforms_in_swimming_water_acceptable_levels.pdfIn PDF document text
    • http://vilatelisoto.onlinewebshop.net/bipidujululowalodavi.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_off0000ca79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA79 5204 bytes
SHA-256: 2f5263aeb2e501dce08d93e7c7a72c15420784ed4d5f5f8f24a9772a0f88d4b9
font_01_sfnt_off0000dc4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4D 10852 bytes
SHA-256: 923efa69fe1a5bdc58bd0973808cef069e431f67afa996eac5702749c4203986