Malicious PDF — malware analysis report

Static analysis result for SHA-256 03c3f47da66c80eb…

MALICIOUS

PDF

81.4 KB Created: 2021-02-13 02:38:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0b4aa3a767bd1c3ae471e724ef028edc SHA-1: 6c19aac23784a35220dcc43913cf275be0b4c0a8 SHA-256: 03c3f47da66c80eb815dc298534a6cfecb025b9ec54ab4d2ad254b97f59cceae
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=newborns+in+need+locations In PDF document text
    • https://jasitonil.weebly.com/uploads/1/3/4/0/134096785/0c1f454935e.pdfIn PDF document text
    • https://tenomexob.weebly.com/uploads/1/3/1/1/131163969/piwitumavora.pdfIn PDF document text
    • https://rurusoweloxefug.weebly.com/uploads/1/3/3/9/133989150/aaef58fdf5879.pdfIn PDF document text
    • http://itverys.space/friendly_tv_channel_listz5izu.pdfIn PDF document text
    • http://rakajipof.22web.org/10095763180.pdfIn PDF document text
    • https://fodubimofo.weebly.com/uploads/1/3/4/8/134884763/niduxudu_vevibo_ripuseni_naxulojonowija.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zarazemudaseri.epizy.com/movies_site_for_pc_in_hd.pdfIn PDF document text
    • http://zakefozufasedi.epizy.com/best_answers_for_fun_facts_about_yourself.pdfIn PDF document text
    • http://kukadafimi.rf.gd/best_naruto_shippuden_game_for_android.pdfIn PDF document text
    • http://kofodubelo.rf.gd/80860686481.pdfIn PDF document text
    • http://fedasumenusum.rf.gd/13956705749.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/weluziwawixowapaterev.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/monitor_calibration_software.pdfIn PDF document text
    • http://vufebadavoga.epizy.com/guided_transmission_media_in_computer_networks_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/88771807343.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_off00010370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10370 5136 bytes
SHA-256: ac2b7b77fefedfcbe6e1327e6d410db907ac0ea21689ba93e997c2a07932e284
font_01_sfnt_off00011506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11506 10524 bytes
SHA-256: c047f624cea3d030d45a96eb7f6bc674691afce17f03ef74550579b28e0c7893