Malicious PDF — malware analysis report

Static analysis result for SHA-256 1005759a48dc931c…

MALICIOUS

PDF

86.7 KB Created: 2021-04-25 23:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a771d9677be49d8d56a40bdcf703cbcb SHA-1: 7a8fafe33fe7dd93f65c7af6eea48c6bf3ed89db SHA-256: 1005759a48dc931c8b4e2fd465fac4ead009bc3097559d24d09a6337e8c17aee
96 Risk Score

Malware Insights

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

The file is classified as malicious by ML and ClamAV, and contains an embedded URI pointing to a suspicious domain. The presence of an external URI within the PDF document suggests an attempt to redirect the user to a malicious site. While no scripts were extracted, the PDF structure and embedded URI are strong indicators of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://pelibifir.ru/strik?utm_term=5+similes+in+sinners+in+the+hands+of+an+angry+god
    • http://helplnstagramoffice.com/239413806073b37w.pdf
    • http://aov.one/bird_sanctuary_wildwood_njp738n.pdf
    • http://zuxegizo.iblogger.org/evolution_of_amphibians.pdf
    • http://ses-sanobrabotka.ru/muhammad_ali_record_against_george_foreman81igm.pdf
    • http://dithetsen.xyz/climatizador_consul_c1h08cbana_manualyxjm1.pdf
    • http://axecheat8.xyz/85191698333dzx8o.pdf
    • http://reduslim-sito.site/sony_mex_n5000bt_manual1i1tb.pdf
    • http://helpcenterbusiness.xyz/74359477256824rt.pdf
    • http://reduslim-europa.site/fukaki5a7bt.pdf
    • http://gatigade.iblogger.org/parliamentary_and_presidential_form_of_government.pdf
    • http://lumacy.site/purumuwufojozaxepubedoxnflc7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://13adc596-845f-4f4a-b539-e2c04a0a4b5a.filesusr.com/ugd/6e2da7_ea4dd30608124111992a319425facae0.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a9eab2ac-bca4-4dc3-9fce-912757fe06b2/63072045807.pdf
    • https://33edd578-4186-4695-89f3-f56a5a23fc53.filesusr.com/ugd/f17c08_d22076f7f2784f6ea7903d18e4098f90.pdf?index=true
    • https://uploads.strikinglycdn.com/files/ed405cf4-f13e-4cd6-a94b-13ecb98829c4/27445655743.pdf
    • http://gopaxojiximupa.epizy.com/64977520709.pdf
    • http://nibudikugi.epizy.com/jogisisutetogukofu.pdf
    • http://bozatifove.rf.gd/what_do_table_service_meals_include.pdf
    • https://bb55feb6-a0c4-48ae-8f72-aea2c45912f8.filesusr.com/ugd/b9801a_278f553bc17c4e07baf5163ac56ef804.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c5cd7088-8e94-4005-beb3-3ce1ce430189/52996010786.pdf
    • https://uploads.strikinglycdn.com/files/aa425d28-d4c4-4468-805d-90854aef134f/nobafivanuxipatowu.pdf
    • http://jokokitot.rf.gd/nemuzun.pdf
    • https://cb47f074-0476-4434-b381-5672a365cab8.filesusr.com/ugd/c46c8a_64d2a11975104f6089e8bdb62d80543a.pdf?index=true
    • https://2a6c20f5-091f-48b5-a5be-bf749919b1f6.filesusr.com/ugd/3794ad_8030c44a853045b884719be340638446.pdf?index=true
    • https://uploads.strikinglycdn.com/files/cf257877-4bac-4b96-8656-14343b210f2c/is_popcorn_ok_to_eat_on_candida_diet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010866.bin
d790e27ab01dc461f358aecb75ed29a9b1f81eb3fa29fa4ee483617b94d1c955		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10866 5240 bytes
font_01_sfnt_off00011a07.bin
87132a46aedfd0388e81897c21a7595d5f006ff4704a3e991d1e79e750413b8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A07 10736 bytes
font_02_sfnt_off00013ed2.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13ED2 4324 bytes

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