Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bb87718fd666a7e…

MALICIOUS

PDF

74.9 KB Created: 2021-02-15 07:43:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6646c8bb4c3a837bf1e26cebf053f83b SHA-1: d35c124425b373e4cb88a57b593057e093065656 SHA-256: 7bb87718fd666a7e5f8515f2da2066764421791525ce338219bdf64530baf904
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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://jacksth.ru/wix?keyword=pokemon+black+and+white+rom+hacks+list PDF link annotation
    • https://cdn.sqhk.co/fezusife/sgIhjwm/60259338556.pdfIn PDF document text
    • http://shishkin-seed.xyz/latin_pronunciation_guide_for_singersicmis.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/HxjjhaM/senate_election_results_today_georgia.pdfIn PDF document text
    • http://josebixotarez.22web.org/71043726228.pdfIn PDF document text
    • https://vidajubobulixi.weebly.com/uploads/1/3/4/6/134650234/54089b71a35fe9.pdfIn PDF document text
    • http://mishgen.com/pexerixowifelaxipukep0fyf.pdfIn PDF document text
    • http://subaxidubuju.22web.org/apa_format_bibliography_journal_article_multiple_authors.pdfIn PDF document text
    • http://triple-doska1.club/jekogipipenwwj6j.pdfIn PDF document text
    • https://cdn.sqhk.co/mevexobuzur/Sjagdji/sazuwajegad.pdfIn PDF document text
    • https://cdn.sqhk.co/ziveluki/gSUMbS0/8378018272.pdfIn PDF document text
    • http://jisurokaz.22web.org/sifufisope.pdfIn PDF document text
    • https://xedaloroxolujig.weebly.com/uploads/1/3/4/0/134018039/3498422.pdfIn PDF document text
    • https://kazigujexumakul.weebly.com/uploads/1/3/4/3/134320364/ba0a32.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/negonanopix/815935242.pdfIn PDF document text
    • http://lozisuvuxinosog.epizy.com/b_ed_date_sheet_2019_balochistan_university.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/html_bootstrap_template_nulled.pdfIn PDF document text
    • http://jexiduro.rf.gd/laxmi_ki_aarti_song.pdfIn PDF document text
    • http://wekidezeze.epizy.com/eu_ageing_report_2019.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_off0000e91f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE91F 5476 bytes
SHA-256: dfe274ecdb7100229eefaaddaec9deefe712f3eb75c5c19c13612668d81257c4
font_01_sfnt_off0000fb9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9F 10268 bytes
SHA-256: 6f55fae2b438f3f1ebbcb9fc671b2c75883ef2624acfd9c0bb73de05fc442f7d