Malicious PDF — malware analysis report

Static analysis result for SHA-256 19bdf2bbf10df347…

MALICIOUS

PDF

78.6 KB Created: 2021-05-16 12:27:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7c9430ba65d6923f0efd5ae8b5f149d SHA-1: 2a0d521042d1c5ffaf63e66da65f85fb70bfcecd SHA-256: 19bdf2bbf10df347593d37fc39db05d2f1b0ceeca6578e1d722e5ea870fae420
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://nipisod.ru/strik?utm_term=girl+interrupted+full+movie+summary
    • http://naxovonukile.iblogger.org/how_to_keep_flesh_eating_beetles.pdf
    • http://study-english-04.space/how_to_describe_the_winds80ft.pdf
    • https://cdn.sqhk.co/dipewoduge/bWgjgjW/76612586203.pdf
    • http://fastpeysistem.online/succeed_in_ielts_listening_and_vocabularyoisvh.pdf
    • http://lotsmen.com/audio_drivers_windows_7_delllhzqc.pdf
    • http://myluckybet.xyz/crompton_s10_brake_wiring_diagrame48ht.pdf
    • http://straponartist.com/pharmacy_iv_calculations_practicephsge.pdf
    • http://mmmmmme.space/974446375516gvmf.pdf
    • http://nijikelax.22web.org/dibavawotutijexu.pdf
    • http://sofoviwov.iblogger.org/nutiwasipogo.pdf
    • http://wordsidepost.top/49603714131682cg.pdf
    • http://ideaita.fun/naziwukeduxojimukiqw9us.pdf
    • http://mojenisijita.mywebcommunity.org/the_bangle_sellers_workbook_answers.pdf
    • https://cdn.sqhk.co/nixagigad/vGjgegi/56538444713.pdf
    • http://gatowixipeba.mywebcommunity.org/footbridge_design.pdf
    • https://cdn.sqhk.co/lakivasulis/jiahbZs/lifeafter_resident_evil_apk.pdf
    • https://cdn.sqhk.co/xuxozowaki/iygijdc/rakikujoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://numaxap.epizy.com/ralph_waldo_emerson_books_in_tamil.pdf
    • http://bujoginivela.epizy.com/facelift_access_consciousness.pdf
    • http://sajokebebax.rf.gd/24919072814.pdf
    • http://jagojogux.rf.gd/assassin_s_creed_revelations_free_for_android.pdf
    • http://nufufud.epizy.com/photoshop_invitation_background_designs_free.pdf
    • http://figapow.epizy.com/95657823724.pdf
    • http://kimufigekufeta.rf.gd/american_endocrine_society_guidelines_vitamin_d.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7b0.bin
adde5f24f03ecf57c9f724b186486c9f1c07119f9f9824edcbd771b04bd33b41
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B0 5380 bytes
font_01_sfnt_off000109fb.bin
81c7c6a1b21667d80c9d41854ab495ac0d5d10c31849890ea633b7f19dd395b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x109FB 10168 bytes