Malicious PDF — malware analysis report

Static analysis result for SHA-256 59881a79779765e5…

MALICIOUS

PDF

79.2 KB Created: 2021-05-02 20:27:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df0f7be92c8ff395f7d4c4462ef93a43 SHA-1: 4e0d7ca00fcaeaa20c92bdb07093d92720eb94c5 SHA-256: 59881a79779765e5e51bb9e767613e5ec67f11051d11b49b74a9f67650f278e0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing an embedded URL that leads to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to programming a Honeywell thermostat, likely a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/strik?utm_term=how+to+program+honeywell+rth6580wf
    • https://cdn.sqhk.co/zufutetuwume/gepEDgj/google_search_bar_dark_mode_android.pdf
    • http://legendbilisim.com/31632522601g0rj8.pdf
    • https://cdn.sqhk.co/runolisor/gdS1Pge/31630892180.pdf
    • https://cdn.sqhk.co/zogameva/HUjdXhg/piwutigo.pdf
    • http://leziwazedo.mypressonline.com/gudezifopanegalo.pdf
    • http://topsol.xyz/martin_luther_king_quote_the_ultimate_measure_of_a_manj7xe8.pdf
    • http://tijudiwulewanuw.getenjoyment.net/bihar_agriculture_road_map.pdf
    • http://damvglaz2.xyz/66009596694ckxw3.pdf
    • http://ottics.ru/definition_of_rainforest_biomeqpkig.pdf
    • https://cdn.sqhk.co/doxowite/3cjbiql/gakonavelefa.pdf
    • https://cdn.sqhk.co/ledodatefu/eKhhUgf/sosapu.pdf
    • http://pogadai.xyz/sewing_machine_seam_guide_sticker8602z.pdf
    • https://cdn.sqhk.co/xogixute/hbhdojf/55989610737.pdf
    • http://taxevidel.medianewsonline.com/bokawadilatusu.pdf
    • http://katalog-siberian-force.online/reminiscences_of_a_stock_operator_and_the_investment_strategies_of_jesse_livermore6m5kh.pdf
    • https://cdn.sqhk.co/dunuxorigu/gC7mpgj/65770094221.pdf
    • http://tapasin.sportsontheweb.net/fawoviw.pdf
    • http://bestita.space/budosabinolazekowi6il4r.pdf
    • http://bolawixefop.mygamesonline.org/sda_bible_quiz_questions_and_answers.pdf
    • https://cdn.sqhk.co/vorowobenune/ifhaeii/50144633299.pdf
    • http://glossywp.online/the_plague_camus_synopsisasovt.pdf
    • http://forexgeeks.net/cost_plus_service_agreement_template34ltz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://girofili.myartsonline.com/nanuxesolatagaraki.pdf
    • http://nivuzujanux.myartsonline.com/how_old_were_the_actors_in_harry_potter_6.pdf
    • http://vafitinupisojud.onlinewebshop.net/ligeia_edgar_allan_poe_english.pdf
    • http://bajekixizosi.myartsonline.com/download_asianfanfics.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_off0000f682.bin
067867e27665a9af4b8dd210521bed6d3ff40edd4dd177c878906e45be0fc2d9
pdf-font-stream PDF embedded font (sfnt) at offset 0xF682 5908 bytes
font_01_sfnt_off00010a94.bin
7000042edaef607ae30cdfe3e9304e34c5b213082836908e25a172f0506c5b37
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A94 10704 bytes