Malicious PDF — malware analysis report

Static analysis result for SHA-256 352701f3cd6a26ef…

MALICIOUS

PDF

71.0 KB Created: 2021-02-17 21:38:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1558186c0fddde3663af7607b8b96908 SHA-1: b780ca568fca63bf32019bff2d05077044f88253 SHA-256: 352701f3cd6a26efee13a6900bb10ddb0d1e75d70546451238039d6aee26d183
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=kingroot+latest+apk+for+lollipop+download In PDF document text
    • http://sozikibonoda.iblogger.org/16482612891.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391302/normal_5ffd361a8c92e.pdfIn PDF document text
    • http://newapegujopabi.22web.org/extreme_asphalt_car_racing_mod_apk_revdl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486969/normal_60103e0b91017.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403410/normal_60026e8f98614.pdfIn PDF document text
    • http://puxefesezosowej.22web.org/gantt_chart_template_planio.pdfIn PDF document text
    • http://texulateniz.iblogger.org/36997429265.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385410/normal_5fe449dfe9437.pdfIn PDF document text
    • http://kosiwixiwumizu.iblogger.org/gonitodixaviwutuzujige.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://venakato.epizy.com/brooding_song_by_victoria_orenze.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/call_recording_folder.pdfIn PDF document text
    • http://sujonereduvuk.rf.gd/74033431575.pdfIn PDF document text
    • http://laletanegimiw.epizy.com/speed_velocity_and_acceleration_problems_worksheet.pdfIn PDF document text
    • http://mapimepokojanut.epizy.com/what_kind_of_ammo_for_taurus_g2c.pdfIn PDF document text
    • http://pilomewolax.epizy.com/sugopiju.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/html_email_signature_template_thunderbird.pdfIn PDF document text
    • http://zujofogu.epizy.com/leiningen_templates_list.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_off0000d9ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9CA 5336 bytes
SHA-256: 6557b25460254b8004c9179822484be75b02a8085bff123ae580a6cddfb85140
font_01_sfnt_off0000ec15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC15 10084 bytes
SHA-256: 1f9871324195be9ea9f997d835a93aa2a567083411a4c1404a0f095ee792ddc0