Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db5e78291c890b2…

MALICIOUS

PDF

80.2 KB Created: 2021-04-14 22:06:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d9e0dccb2dd0597f999eb3b65e8b34b SHA-1: 26bd05f8b20452e0454997fac4357c2e707deb72 SHA-256: 6db5e78291c890b2c70b6aef25709e72c827c6ab915bac23931d84dbf509e1a4
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that points to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though partially corrupted, contains a seemingly innocuous fishing lure question, which is likely a pretext to disguise the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/strik?utm_term=what+is+the+best+lure+to+catch+crappie
    • http://lerinumemikiw.22web.org/defensive_driving_test_answers_georgia.pdf
    • https://cdn.sqhk.co/feluxolid/xGKPHhf/kung_fu_tea_set_travel.pdf
    • http://mafonofolifeda.22web.org/container_inventory_sheet_army.pdf
    • http://gafujovinotu.22web.org/leadership_theory_application_skill_development_free.pdf
    • http://fasufigige.iblogger.org/14588596811.pdf
    • http://dixurujisefumet.22web.org/august_2020_current_affairs_download.pdf
    • http://ladukebi.22web.org/proceso_de_la_investigacion_cientifica_raul_rojas_soriano.pdf
    • https://cdn.sqhk.co/bilanogakiw/ijZgeKu/39885695949.pdf
    • https://cdn.sqhk.co/poxofufiko/ibTjdZh/istation_app_for_windows.pdf
    • https://cdn.sqhk.co/runudori/8qgdibx/21177549314.pdf
    • http://kutufirix.iblogger.org/woocommerce_checkout_shipping_template.pdf
    • https://cdn.sqhk.co/mikevoponage/ahkihN9/my_back_pages_wikipedia.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mazirepubugokun.epizy.com/81091969799.pdf
    • https://b7d3a0ae-8059-487b-8826-088776693174.filesusr.com/ugd/8d23e4_8c0df634cd714aa1b58becfc711109e5.pdf?index=true
    • http://vuxotuketut.rf.gd/kenigowaxakenotiwofefak.pdf
    • http://xagevudogitoti.epizy.com/saloji.pdf
    • http://lonogukubof.epizy.com/41014472220.pdf
    • http://gonuwufif.epizy.com/popcorn_audio_converter_tools.pdf
    • https://eecb1da5-82b7-48ef-90e5-6a20895c07e7.filesusr.com/ugd/88a84f_859d9ed9e0a3436cbe4164feaa552a97.pdf?index=true
    • http://jexunon.epizy.com/47437179947.pdf
    • https://ef2e072a-e8a2-4438-804d-cc750be2e2f6.filesusr.com/ugd/6a22cb_8a5b8107780146a2b565635be5b14fcd.pdf?index=true
    • http://zukazito.rf.gd/ninozutiwoputelop.pdf
    • http://dizavinizekabos.rf.gd/11857210408.pdf
    • http://solijolubijot.epizy.com/undifferentiated_schizophrenia_case_study.pdf
    • http://dumatefofexulen.epizy.com/jumping_spider_eyesight.pdf
    • http://lafasusatar.rf.gd/free_printable_thanksgiving_worksheets_for_4th_grade.pdf
    • http://mivozupulakirad.epizy.com/depalaposogu.pdf
    • https://460eb545-5389-4aa9-9e78-d1074a8bca0c.filesusr.com/ugd/21a131_b2fe9dcd94e54780a0af8e4bb36dd2dc.pdf?index=true
    • http://zunuwovadete.epizy.com/54754474722.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_off0000fb6b.bin
7b415a2b8aed57beb9dabb5e119a206dd99e9bce8ab520f64d83880d5a74452a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6B 5176 bytes
font_01_sfnt_off00010d06.bin
9bf16653ca42d86eaf884e9990140fc44f1d4cf4475a4ddd7517e29a6ceccd82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D06 10556 bytes

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