Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ebe7d702c49b13…

MALICIOUS

PDF

81.0 KB Created: 2021-03-24 18:33:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6774dbd772c039141a348247d9991b29 SHA-1: 574a07d07ff4d8f7c01c4f68a1812120cd298ac1 SHA-256: b6ebe7d702c49b1343d98009d766d91a5aa4f925b8cd01ccc9bfd8bcd773db64
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9967

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://jottigo.ru/strik?utm_term=el+arte+de+amargarse+la+vida+resumen PDF link annotation
    • https://cdn.sqhk.co/jisaside/hhgChgj/120hz_touch_sensing_iphone_11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468296/normal_604e519572480.pdfIn PDF document text
    • https://cdn.sqhk.co/fakodozug/izAnhfb/berotoz.pdfIn PDF document text
    • https://cdn.sqhk.co/gunobawiwax/xchbXNG/11421276296.pdfIn PDF document text
    • http://degakak.sportsontheweb.net/masotorezavu.pdfIn PDF document text
    • http://wedipum.mygamesonline.org/thinking_fast_and_slow_audiobook.pdfIn PDF document text
    • http://zokugorevat.mywebcommunity.org/how_to_assemble_a_wahl_clipper.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387577/normal_6037fef2090d9.pdfIn PDF document text
    • http://leziwazedo.mypressonline.com/sememuxixuvanevegejiga.pdfIn PDF document text
    • http://nenugatigubom.66ghz.com/emulator_ios_12.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/international_journal_of_medical_sciences_and_current_research_pubmed.pdfIn PDF document text
    • https://cdn.sqhk.co/tabotewo/hOghicq/276031846.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/napuno.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466996/normal_601dc2296779d.pdfIn PDF document text
    • https://cdn.sqhk.co/tisewesir/ghFO6XZ/fox_news_world_current_events.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466675/normal_5fd174fbd3689.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duxegejuw.atwebpages.com/sinusoidal_waveform.pdfIn PDF document text
    • http://xijivat.rf.gd/bacterias_aerobias.pdfIn PDF document text
    • http://forojiwimudobo.atwebpages.com/3rd_eye_meditation.pdfIn PDF document text
    • http://voralesi.epizy.com/permanent_employment_contract.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fd2b071-9f88-446c-8e95-f5a67a3a8e2f/how_much_is_hp_laptop_battery_in_nigeria.pdfIn PDF document text
    • http://bejuzijufure.rf.gd/80010662493.pdfIn PDF document text
    • http://gamutazuzores.epizy.com/atharva_veda_in_odia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77523b12-3c51-491d-804b-0ffab3618def/how_to_troubleshoot_an_air_conditioner_compressor.pdfIn PDF document text
    • http://wumafopid.onlinewebshop.net/46697761870.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9f2d672-c72e-45a8-8976-e4ca25f00538/86584749829.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_off0000fc39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC39 5164 bytes
SHA-256: 5163913f7dac94ee4d39fbb9f75a1e065f001e50841be301a17b11debe0429f3
font_01_sfnt_off00010db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB9 11940 bytes
SHA-256: f9e59c6a9405ffaa6cc2a6c1e0ca5a8d38d7bb3968088fd584df96e96a2e5b8f

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