Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef1570e18a06c97d…

MALICIOUS

PDF

78.7 KB Created: 2021-03-29 17:08:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 948185d58071a9444d2a798e82d1b16d SHA-1: 71a833ecbac30284e43c626b63a39dfbadc6e0ee SHA-256: ef1570e18a06c97d5be6f80e25cb26f239c2e98faeefabb00e9a2c14b48033f0
96 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is directly related to the document's apparent theme of 'human development'. The ML classifier and ClamAV detection strongly indicate maliciousness. The presence of multiple suspicious URLs suggests the document is designed to redirect users to potentially malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://golowaki.ru/award?keyword=definition+of+human+development+pdf
    • http://sexedate69.site/50th_hunger_games_booku2nbi.pdf
    • https://vekerarefatada.weebly.com/uploads/1/3/4/8/134868636/9f44d12eed.pdf
    • https://nazorilorapumug.weebly.com/uploads/1/3/0/7/130776423/kazurod_patobazuzamuzik_dodesijerejomu.pdf
    • http://devgm.design/76941813389b21ef.pdf
    • http://bofajazikevag.22web.org/auditoria_de_sistema_de_informacion.pdf
    • http://fastcreditreport.info/thank_you_for_being_late_review_guardianwu8tz.pdf
    • https://werunumugupis.weebly.com/uploads/1/3/4/3/134399568/femilot.pdf
    • http://reliables.ru/72475777535ppq4n.pdf
    • https://senidexug.weebly.com/uploads/1/3/0/7/130775540/nukigoxowepiwake.pdf
    • http://robolab.one/holt_physics_textbook_solutionsyw8no.pdf
    • https://rinuxusopav.weebly.com/uploads/1/3/4/6/134679155/gufujekefer.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xogamix.rf.gd/research_paper_on_behavioural_finance.pdf
    • http://tetomor.rf.gd/julodupexu.pdf
    • http://sixanuramusasit.epizy.com/bhojpuri_gana_2019_ka_dj.pdf
    • https://7322f44d-5cb7-45f5-8521-a79093f6ce74.filesusr.com/ugd/dd0890_f0b7231bf1624b1e9369e1897e06f2f9.pdf?index=true
    • http://musafokekezev.rf.gd/bookkeeping_and_basic_accounting.pdf
    • http://putotapuzavip.rf.gd/31192034791.pdf
    • http://fakadigat.epizy.com/the_power_of_positive_thinking_book_free_download.pdf
    • https://d591c853-f4c5-4af8-b05d-209519cf7dc1.filesusr.com/ugd/fc3b0b_83b0e4cbb430489cbc6218a354e42dda.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a4b2390d-cd19-47db-b151-c8c3106c6df7/collusive_and_non_collusive_oligopoly_class_12.pdf
    • https://uploads.strikinglycdn.com/files/19830b64-37a9-4abc-ab61-682d46892b41/zopomaximezopositefugawor.pdf
    • http://baxadozivu.epizy.com/birthday_pic_free.pdf
    • http://wuxegutazaxelox.epizy.com/36004727331.pdf
    • https://uploads.strikinglycdn.com/files/3c89ed46-1f19-455f-8339-1e1a6bd3e3d1/45566802225.pdf
    • http://favolaven.epizy.com/sodonowarumejivafokiga.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_off0000f55e.bin
c58b17b90f8c68579ffb22cede00e6e83cec7e3a7365eb1caea5247f9543f5f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF55E 5068 bytes
font_01_sfnt_off00010686.bin
9b183b71ff28480c223eea1cf02f0622614e7489b1484a549146b118682de6dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10686 10920 bytes

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