Malicious PDF — malware analysis report

Static analysis result for SHA-256 48d6cf257ada26c7…

MALICIOUS

PDF

73.5 KB Created: 2021-04-01 16:49:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b5e2cd2187a0fbb75eb5f1aadf7d5bc SHA-1: 6fac6dc5b691eb7d5b9714aed7446f388fe24791 SHA-256: 48d6cf257ada26c79c6dee28badcbd42405181afbdbf2624a2935394eaf07282
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://lozipotod.ru/wix?keyword=ser+estar+y+tener+worksheet+answers, is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to educational worksheets.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/wix?keyword=ser+estar+y+tener+worksheet+answers
    • https://static.s123-cdn-static.com/uploads/4393639/normal_6009606ae0a98.pdf
    • http://lorakuze.sportsontheweb.net/the_stand_cbs_episode_1.pdf
    • http://gowanenutik.mypressonline.com/reflux_moonshine_still_plans.pdf
    • http://tobufupevujuma.mygamesonline.org/biology_lab_report_format.pdf
    • https://cdn-cms.f-static.net/uploads/4466666/normal_6012324e4f657.pdf
    • http://tamakedesununod.mywebcommunity.org/kesixen.pdf
    • http://fukuzowi.sportsontheweb.net/how_to_reset_brake_fluid_light_on_bmw_e90.pdf
    • https://static.s123-cdn-static.com/uploads/4451561/normal_5fd08d1a759da.pdf
    • http://duwinijuj.mypressonline.com/harry_potter_y_la_cmara_secreta_resumen_libro.pdf
    • http://rewetuxavix.mypressonline.com/77332296629.pdf
    • https://static.s123-cdn-static.com/uploads/4462351/normal_5ffdb1c17bf3a.pdf
    • http://bivaxopepukoxi.getenjoyment.net/37894929256.pdf
    • http://doxisolawasusig.66ghz.com/photos_ananas_free.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bagugexasorip.myartsonline.com/como_agua_para_chocolate_analisis_mama_elena.pdf
    • http://saxodanokijaj.atwebpages.com/how_to_do_crochet_box_braids_on_short_hair.pdf
    • http://koxowasone.epizy.com/daily_grammar_practice_8th_grade_answer_key.pdf
    • http://gilokokivaw.epizy.com/pdf_to_word_best_converter_online_free.pdf
    • http://folalolitawos.epizy.com/automotive_engineering_vtu_question_papers.pdf
    • https://s3.amazonaws.com/xupimaral/ccna_2_answers_chapter_2.pdf
    • http://venabot.rf.gd/information_center_meaning_in_marathi.pdf
    • https://s3.amazonaws.com/kopisigapub/astrill_vpn_for_windows.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_off0000e21c.bin
d695984474b2eaf6683ecb9d03257f376f53489aea2cf3751f86946e85860699
pdf-font-stream PDF embedded font (sfnt) at offset 0xE21C 5100 bytes
font_01_sfnt_off0000f384.bin
bf79dfda97477ff0f4d8bdbc509add96e11e7139d05a1033d12b8c135270c00b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF384 11388 bytes