Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5c21f0c38c5bd86…

MALICIOUS

PDF

74.3 KB Created: 2021-03-01 18:38:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d9cd52cd00bdb9121fc20f3101213809 SHA-1: 8f10fd3f4520bc8f4319be12ca7ca661920d647a SHA-256: b5c21f0c38c5bd86fbe7e3104bf717115235234c7bfb26c9a5b1a6df35f641a2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • 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://gimoguvi.ru/wb?keyword=subway%20surfers%202%20game%20free%20download%20for%20pc%20windows%20xp PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460263/normal_5ffa1589b0124.pdfIn PDF document text
    • http://salestore.pro/noma_snowblower_parts_diagramewtyi.pdfIn PDF document text
    • https://zetitazafoxiz.weebly.com/uploads/1/3/4/0/134040412/votojogenidamo_dozikixilopidor_bubetu_wifad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409246/normal_5fca765aabb17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469374/normal_5ffd6dba46120.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465007/normal_603410d58fb31.pdfIn PDF document text
    • http://douchelabs.xyz/avabel_lupinus_build_guidemyxq3.pdfIn PDF document text
    • https://jabudebixeref.weebly.com/uploads/1/3/4/3/134398441/nomozovaposugi.pdfIn PDF document text
    • https://gegovowazuravas.weebly.com/uploads/1/3/1/3/131398401/firazuradudal.pdfIn PDF document text
    • https://cdn.sqhk.co/zolulesar/s9hjUxZ/ecostar_led_remote_control_app.pdfIn PDF document text
    • https://pebezudaxefen.weebly.com/uploads/1/3/4/3/134347708/tomel.pdfIn PDF document text
    • http://gbo.guru/alcatel_2019g_g_mobile_phone_user_manualta3r3.pdfIn PDF document text
    • https://fuwodeku.weebly.com/uploads/1/3/6/0/136095673/b4970ba2.pdfIn PDF document text
    • http://ooovseanalizi.ru/how_do_i_setup_my_linksys_extender_re6400iirr6.pdfIn PDF document text
    • http://damita.fun/6641386958985iks.pdfIn PDF document text
    • http://kanshoper.site/how_to_reset_my_plantronics_voyager_edgemehkc.pdfIn PDF document text
    • http://submonster.xyz/tazafosu96ws3.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/dowadotiju/anemia_megaloblastic.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_off0000e435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE435 6112 bytes
SHA-256: a0613491022fd1fab6fbbf445dce218407b7ee8e58aef3ef25dc27bc12fc1db7
font_01_sfnt_off0000f90a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF90A 10184 bytes
SHA-256: 53edb960e9c0042d115df116e1a996ad50e33574fdb0b21b110b5aa93162ab62