Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a8ecf607d9452e2…

MALICIOUS

PDF

71.5 KB Created: 2021-02-15 18:56:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ab5a4d6e08f86c2a17030bdef5dbd248 SHA-1: c2531453114401d02def75434d1c573783f46f7b SHA-256: 6a8ecf607d9452e29a814b008dfd3ba2d5cbe105d180330aa5c58f3e96baf241
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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/wb?keyword=keurig%20k-elite%20c%20single%20serve%20coffee%20maker%20reviews PDF link annotation
    • http://xuvaguwanolinu.66ghz.com/98803185306.pdfIn PDF document text
    • http://uaportal.site/kozinoradou8dev.pdfIn PDF document text
    • http://sezewadiwun.22web.org/catarina_a_grande.pdfIn PDF document text
    • http://thesalle.xyz/magdalen_islands_travel_guide7o50c.pdfIn PDF document text
    • http://sdfafq.info/google_account_manager_5._0_apkpurek1uv6.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/dupula/cheap_android_auto_head_unit_uk.pdfIn PDF document text
    • http://rigirulame.epizy.com/89104402754.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/wabuvedajosanigakaveduto.pdfIn PDF document text
    • http://rozixan.rf.gd/32456246811.pdfIn PDF document text
    • http://xalobazinapirep.epizy.com/26158983810.pdfIn PDF document text
    • http://wuzegez.epizy.com/bimanual_examination_guidelines.pdfIn PDF document text
    • http://felepav.epizy.com/bread_and_butter_letter_format.pdfIn PDF document text
    • http://memaded.epizy.com/michelin_star_guide_london_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/juvanuwaboxixulimivabi.pdfIn PDF document text
    • http://finubovuputok.epizy.com/biomet_radial_head_replacement_technique_guide.pdfIn PDF document text
    • http://muwovupa.epizy.com/83114345680.pdfIn PDF document text
    • http://bixuxopot.epizy.com/carbon_fiber_sheets_1mm.pdfIn PDF document text
    • http://xaxibalese.epizy.com/70526936205.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_off0000daae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAE 5420 bytes
SHA-256: f257915365ccab8a5dd867b5e01aab8c619c2a9732b87202b11885553c13b0d3
font_01_sfnt_off0000ed33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED33 10416 bytes
SHA-256: 8f89173d91e239a1f8d200e56ac111d7797a9aafe4633546964cdf8eba440e56