Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ba4fbe10f46c0f2…

MALICIOUS

PDF

68.0 KB Created: 2021-02-19 23:43:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: f4558959d09757378a26382e1b6091ab SHA-1: 314115ca35df5d9ad641c8c175e28e47e843639f SHA-256: 7ba4fbe10f46c0f2b35e91dd069928d9643022cd9ab012b551b6359700c719dd
154 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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://jacksth.ru/aws?utm_term=herman+miller+aeron+chair+refurbished+uk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408586/normal_601123f830fed.pdfIn PDF document text
    • https://mofalapew.weebly.com/uploads/1/3/4/3/134307760/megedebem.pdfIn PDF document text
    • https://jezasozogederek.weebly.com/uploads/1/3/5/9/135960593/fetezidokunuto_pejef.pdfIn PDF document text
    • https://woxexawunum.weebly.com/uploads/1/3/0/7/130776255/mirari_gikabita_mavojiwem.pdfIn PDF document text
    • http://www-sfr-fr-monespace.com/upstairs_downstairs_brain_worksheetu8fex.pdfIn PDF document text
    • http://bossyonlinex.com/79564485661f8ag9.pdfIn PDF document text
    • http://nadahul.ru/free_bootstrap_template_for_admin5rzya.pdfIn PDF document text
    • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/6298967.pdfIn PDF document text
    • http://pifumufupes.iblogger.org/guntersville_lake_bass_fishing_report.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lawigut.rf.gd/how_to_get_a_stuck_vhs_out_of_a_vcr.pdfIn PDF document text
    • http://nawonuzegajosi.epizy.com/lonarepawuw.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/30131955157.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/honeywell_security_system_keypad_manual.pdfIn PDF document text
    • http://xubexiv.epizy.com/leave_application_format_for_office_doc.pdfIn PDF document text
    • http://kufekamulez.rf.gd/bujobiva.pdfIn PDF document text
    • http://rowomasogig.epizy.com/xukofevijagavasigimasibi.pdfIn PDF document text
    • http://dobejul.epizy.com/c_r_p_f_form_online.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/13586037187.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_off0000cd14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD14 5424 bytes
SHA-256: 10dc830e7682eaac47860620f257d0be8bd584c559799c82d2c12c7a3f0a3adc
font_01_sfnt_off0000df55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF55 10508 bytes
SHA-256: b5cbea50e9cf9a49fef492ddcccc80d327f4e8fff8d60788b2816544e5a3165f