Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eb67d7dbf4ab721…

MALICIOUS

PDF

76.9 KB Created: 2021-02-28 13:37:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 01acb9635bbe2b6c3168328a9b437bf6 SHA-1: f55f548756ac13d7b5f2d50290e14efdaae6a0ae SHA-256: 0eb67d7dbf4ab721580d2cfe78a19e7bacca23b3ec5c4a12c49ae91b56a42319
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains numerous embedded URLs, with a primary lure pointing to 'https://gimoguvi.ru/wix?keyword=unblocked+games+mario+crossover', suggesting a social engineering tactic to redirect users to potentially harmful content. The PDF also functions as a link farm, further supporting its role in directing users to external, malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=unblocked+games+mario+crossover PDF link annotation
    • http://dazolovegom.mygamesonline.org/31375141248.pdfIn PDF document text
    • https://nevozijefase.weebly.com/uploads/1/3/4/7/134748823/wujutadodixemop.pdfIn PDF document text
    • http://useraisins.pro/best_portable_shooting_bench_plansf6qju.pdfIn PDF document text
    • http://itfamily.info/whatsapp_aero_latest_versionj9pir.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/why_is_rosaline_important_in_romeo_and_juliet.pdfIn PDF document text
    • http://dekiweragaf.mywebcommunity.org/6163525115.pdfIn PDF document text
    • http://requiredjokblog.com/nccn_guidelines_in_oncologyv9mtr.pdfIn PDF document text
    • http://milanbeach.fun/escape_plan_3_full_movie_filmyzillacs0rn.pdfIn PDF document text
    • http://wajufogisabo.iblogger.org/nesozegevavotowag.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/garorowa/vipupabukofejosi.pdfIn PDF document text
    • http://pabotojixupi.atwebpages.com/21091263868.pdfIn PDF document text
    • http://xedovafimolodem.epizy.com/credit_card_authorization_form_template_quickbooks.pdfIn PDF document text
    • http://ruguwusizomu.epizy.com/backstab_apk_obb_all_gpu.pdfIn PDF document text
    • http://faxaxesaxejov.rf.gd/nikon_buckmaster_ii_3-_9x40_manual.pdfIn PDF document text
    • http://wexugemo.epizy.com/47253748732.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_off0000ee77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE77 5512 bytes
SHA-256: 471d862ebc4485e5f4ff4a55406e65707e2a67372a2e6ee7eab1a85937474f63
font_01_sfnt_off00010126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10126 11012 bytes
SHA-256: 1ef2d6e4381f3a3201daa328b9f22394f9accc6bc2e16a3fdf7146c58000fb05

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