Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbe5564939b287e9…

MALICIOUS

PDF

73.6 KB Created: 2021-02-28 08:34:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7f890232964f079877f6a8e302d086d9 SHA-1: b5f8dbf5380d72db84840ef84df68e0011238408 SHA-256: fbe5564939b287e9bc07fe735c755501d82449143be159401c6a627fec3dfbc6
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 0.9993

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://dafemum.ru/strik?utm_term=can+type+1+diabetics+be+on+keto+diet PDF link annotation
    • http://peluxuba.sportsontheweb.net/linear_inequalities_word_problems.pdfIn PDF document text
    • https://wuxivebumuvarog.weebly.com/uploads/1/3/1/0/131070366/2639886.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366395/normal_5fec34f18ae4d.pdfIn PDF document text
    • http://qrastenmap.online/seamless_bible_study_bookjjt18.pdfIn PDF document text
    • http://timecodes.net/4276818719138v9i.pdfIn PDF document text
    • http://sowipilarow.mygamesonline.org/what_is_descartes_second_meditation.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483589/normal_5fe9c72303a12.pdfIn PDF document text
    • http://xsafak.com/foxit_reader_word_converter_free_downloadqaj7k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450259/normal_600ebe2ec6cf3.pdfIn PDF document text
    • https://xoselupovogim.weebly.com/uploads/1/3/4/6/134610719/gofazixa_gizitubosesobim_xogemuselobaja.pdfIn PDF document text
    • http://ashotik.space/50587243354gkz10.pdfIn PDF document text
    • http://moxufelomewiziw.iblogger.org/56966747726.pdfIn PDF document text
    • http://myyshooop224.site/demonter_garniture_porte_c3ylgfo.pdfIn PDF document text
    • https://gebonevoduxap.weebly.com/uploads/1/3/1/6/131606392/5287113.pdfIn PDF document text
    • http://1xbet-regi.site/why_does_my_roomba_go_in_circles858xh.pdfIn PDF document text
    • http://egosikenclub.com/86845388683huz00.pdfIn PDF document text
    • http://bahis-sikayet.com/blackstar_id_core_100_usedzex21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459320/normal_6013c9b065037.pdfIn PDF document text
    • http://copriyghtconfirmed.com/plantronics_backbeat_fit_350_wireless_sport_earbuds_reviewu5ort.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fanudisa.rf.gd/plant_physiology_and_biochemistry_journal_abbreviation.pdfIn PDF document text
    • http://ketabigumowun.atwebpages.com/83047504121.pdfIn PDF document text
    • http://pepezuvizomu.rf.gd/langrisser_gear_guide.pdfIn PDF document text
    • http://dazinisakopiviz.rf.gd/american_standard_freedom_90_single_stage_flashing_red_light.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_off0000e343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE343 5204 bytes
SHA-256: ee30798fc7cf8137c7bfd6c58d7539dafaa0d5b411bd336d214601df758edced
font_01_sfnt_off0000f50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50F 10476 bytes
SHA-256: 97cbeb59f97eca96b4458edc65a1836c2c01dc88beb743775c2498b31cf39e50

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