Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6e354f3fa7d325c…

MALICIOUS

PDF

85.6 KB Created: 2021-03-15 19:57:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17aadcd54994342130ef9b2c725ea557 SHA-1: 70e21e75bf55988cb1ccf3b1007d594a741c1fc1 SHA-256: c6e354f3fa7d325ca6fbafe7ba6d360ebb704994123cc9e6f6e1757fafbd8bd8
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'jacksth.ru', which is likely part of a phishing or malware distribution campaign. No scripts were extracted, but the presence of an external URI and the overall detection suggest a malicious intent to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://jacksth.ru/strik?utm_term=sig+p226+mk25+owb+holster
    • http://finuxezanasa.mygamesonline.org/what_are_the_levels_of_jiu_jitsu.pdf
    • https://cdn.sqhk.co/vetukalujir/1q3sDVc/royal_caribbean_international_number_of_ships_for_sale.pdf
    • https://cdn.sqhk.co/sedazozesufu/jd0Yihf/88743438400.pdf
    • http://nigodofifulo.scienceontheweb.net/59376476067.pdf
    • https://cdn.sqhk.co/fokigegoma/Rz8UVie/governor_of_poker_2_premium_free_download.pdf
    • http://tokudujadi.medianewsonline.com/how_to_get_cleared_from_credit_reference_bureau.pdf
    • http://famozosivupiwij.sportsontheweb.net/kefonu.pdf
    • http://juxumigine.mypressonline.com/tazutisozarafipefosidiwa.pdf
    • http://sukidalakag.22web.org/lamaw.pdf
    • http://lujakivuvig.22web.org/auburn_hills_police_department_accident_reports.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://sotatelovutegep.epizy.com/sistem_pencernaan_manusia_sd.pdf
    • http://damugiwixosaxo.epizy.com/best_phonics_books_for_1st_grade.pdf
    • https://ee60c613-3dd1-430d-b711-08e3dcbf0273.filesusr.com/ugd/19ce5d_c4dcabd3f3424c279255bab15ebd9690.pdf?index=true
    • http://fararisujis.myartsonline.com/wiboneja.pdf
    • http://vizumun.rf.gd/rodisigidipuxiparajilofe.pdf
    • https://uploads.strikinglycdn.com/files/6c9288b8-8f9a-4d0b-a53f-c25e45e7c4bd/what_does_it_mean_to_be_a_martha.pdf
    • https://uploads.strikinglycdn.com/files/6d8ca909-7070-4170-b267-c6187d5ef5fe/hp_officejet_4500_printer_wireless_setup.pdf
    • https://12f7643e-9106-4823-89c2-0bdaecd1bc22.filesusr.com/ugd/1f6d71_2639bd4fec4548aa8fff2442297b302e.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9aea3704-b2d2-4874-8481-5eace5e1c98a/thoroughly_modern_millie_jr_cast_of_characters.pdf
    • https://uploads.strikinglycdn.com/files/df6c5a15-969b-4cf6-93a4-b4f618740f60/feliz_navidad_jose_feliciano_2020.pdf
    • https://502e425a-54a0-4661-a3e6-c6e116bdb13d.filesusr.com/ugd/10da26_5297ffbd9b734f05b4026404a7737c22.pdf?index=true
    • http://dotopaku.atwebpages.com/purorisuxepefutaruvi.pdf
    • https://6a1e2a5f-c456-4288-b9d5-5378f87870fb.filesusr.com/ugd/076fac_130cbfbe7e1a49d79c3884dd98c694bc.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2054a45f-e4f3-4ab0-a0b5-31a5b4f37366/hitchhikers_guide_to_the_galaxy_quotes_dolphins.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_off000100cb.bin
e8a6d0be6f0025324b6208f421735491e382211cf1770d1ec8eabf88d8b6de9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100CB 5516 bytes
font_01_sfnt_off0001139c.bin
41d8fdab6c2d9a764a52fb0d1f3f038ec0eccda2b59405b20883c5eb86664c77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1139C 11028 bytes
font_02_sfnt_off00013942.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13942 4324 bytes

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