Malicious PDF — malware analysis report

Static analysis result for SHA-256 d483c599360f52f9…

MALICIOUS

PDF

75.3 KB Created: 2021-03-12 00:28:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 99f5afb7fe6bb4200a371a3568072dd6 SHA-1: 2c0f22ca5b7e33c537e0402dfe4ab266f0ccd543 SHA-256: d483c599360f52f922587524181280d18d3655742d5c3b45beee5f94b3e36d41
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://xezojetit.ru/123?utm_term=asthma+treatment+nice+guidelines PDF link annotation
    • http://forovasax.medianewsonline.com/tesla_model_3_0-60_awd.pdfIn PDF document text
    • https://cdn.sqhk.co/biluvetizom/Rjhgcjg/consumer_reports_battery_powered_hedge_trimmers.pdfIn PDF document text
    • http://waferaboteb.mypressonline.com/logitech_keyboard_k120_russian_layout.pdfIn PDF document text
    • https://cdn.sqhk.co/dabigewom/gghf0AQ/47742225776.pdfIn PDF document text
    • http://online-sistem.site/metformina_vademecum_mexicop7hmp.pdfIn PDF document text
    • http://gewusoluxul.scienceontheweb.net/24505521134.pdfIn PDF document text
    • http://kufasoxix.22web.org/learn_chinese_language.pdfIn PDF document text
    • https://cdn.sqhk.co/rekosiseweno/fgjghii/zekorogesipa.pdfIn PDF document text
    • http://interior.estate/83293525576j19xp.pdfIn PDF document text
    • http://vizilirudigub.getenjoyment.net/introduction_to_calculus_and_analysis_vol_2_solution.pdfIn PDF document text
    • http://ilkertr.shop/spelling_power_grade_7_answer_key_lesson_15lvejj.pdfIn PDF document text
    • http://rcasino.info/50117551678a1psy.pdfIn PDF document text
    • https://cdn.sqhk.co/jivaduzar/giejhjh/gaminator_casino_slots_free_slot_machines_777.pdfIn PDF document text
    • https://cdn.sqhk.co/pixorikibam/gdDgINA/palemife.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/patotale/95057433863.pdfIn PDF document text
    • http://nowumotugolate.epizy.com/arris_tm1602ap2_user_manual.pdfIn PDF document text
    • http://jovawat.epizy.com/household_budget_worksheets_free.pdfIn PDF document text
    • http://kavibajegis.onlinewebshop.net/99199101525.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/angular_form_input_select.pdfIn PDF document text
    • http://sudexixurijaxoz.atwebpages.com/85231033560.pdfIn PDF document text
    • http://jitawidavez.atwebpages.com/what_does_cycled_mean_in_mtg.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/19604037505.pdfIn PDF document text
    • http://vebusatoro.atwebpages.com/craftsman_inch_pound_torque_wrench_manual.pdfIn PDF document text
    • http://xobebol.onlinewebshop.net/pabekoju.pdfIn PDF document text
    • http://suxorodefis.epizy.com/44672530316.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/pitt_mandated_reporter_training.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB53 5340 bytes
SHA-256: d953ebd44989106b8f3cafb69acd076aa96e33700cd864bfd9d50a7e9ffa3e87
font_01_sfnt_off0000fd4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4C 10092 bytes
SHA-256: 4618d45ff1b03d7d923810470b410a1e3727ad1df946b4cac2f2b5f98eff3335

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