Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce8c758ce8fdc297…

MALICIOUS

PDF

71.7 KB Created: 2021-04-01 13:49:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1b61adc3116c74f0d21c4a7d7964b805 SHA-1: 5baa1fa2f83186789ab989c3563b366b4ee7bda2 SHA-256: ce8c758ce8fdc29730dfd813ec31ea7de90a8b23f674dd231d71abc2a99122ac
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 0.9998

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
  • 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://soxebez.ru/wix?keyword=modern+chemistry+chapter+4+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/natefisaka/thbjegh/39715511525.pdfIn PDF document text
    • http://narezekopalezi.iblogger.org/sansa_clip_firmware_download.pdfIn PDF document text
    • http://marketes.pro/mumobojeliga16ijv.pdfIn PDF document text
    • http://securespot.ru/fe_exam_united_statesuzq1a.pdfIn PDF document text
    • http://vezerfa.xyz/kalivikh6cp.pdfIn PDF document text
    • http://bosemefawixuwov.mypressonline.com/hp_probook_6560b_wifi_drivers_windows_7_64_bit.pdfIn PDF document text
    • http://nupesupo.mypressonline.com/aashiqui_2_songs_chords.pdfIn PDF document text
    • https://cdn.sqhk.co/legezuseg/jjhdwif/home_pony_game_online.pdfIn PDF document text
    • https://cdn.sqhk.co/zosikoto/SSidThp/australian_rules_football_team_sheet.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/capitalism_2_guide.pdfIn PDF document text
    • http://homiak.fun/xujagupol6xret.pdfIn PDF document text
    • http://fullstacket.online/dns_server_clash_of_clansox252.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://manuwakagekewu.onlinewebshop.net/ramosugosiju.pdfIn PDF document text
    • http://ralorepozariti.rf.gd/suzuki_ertiga_2020_specs.pdfIn PDF document text
    • http://bumejefivoxigo.myartsonline.com/71307911219.pdfIn PDF document text
    • http://vakizonozajaxe.onlinewebshop.net/fidarizosejifukifa.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_off0000d99d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99D 5632 bytes
SHA-256: bb8b06c4d21e7ee8eb3e07153b604124eee025e8d8f90db1d5bc71ba5b0a3964
font_01_sfnt_off0000ecc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC9 10860 bytes
SHA-256: 33959a775cbc575a9b87aade683cf56297fe0430aa3dc5f4bcecec4eb886e0a1

Open this report in the interactive analyzer, or submit your own file for analysis.