Malicious PDF — malware analysis report

Static analysis result for SHA-256 522323a31a416296…

MALICIOUS

PDF

416.0 KB Created: 2021-04-30 09:01:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 390df5d66f7fcc7bc47dacba47093c1d SHA-1: 1b39e94baf30c66c89ebd3c3163208f64e5ced8a SHA-256: 522323a31a416296c54b9b53a3c70655b57bad18113437e9c90b974ed4117aa4
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6231

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://vilenefex.ru/strik?utm_term=talk+to+me+in+korean+books+pdf PDF link annotation
    • http://janafan.scienceontheweb.net/12685721977.pdfIn PDF document text
    • http://shoop-fo.ru/30861059757326bl.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/ugihbic/149732504.pdfIn PDF document text
    • https://cdn.sqhk.co/bapuwanuvadi/hbgdghn/motown_music_on_xm_radio.pdfIn PDF document text
    • http://study-english-05.site/hp_probook_6470b_specificationsq8mce.pdfIn PDF document text
    • https://cdn.sqhk.co/pamomusemida/jjFyDii/algebra_2_practice_workbook_answer_key.pdfIn PDF document text
    • http://marketes.pro/gejudafuzodifejewiwshufl.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwaseja/Nryzqjc/dinosaur_battle_games_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/UMiiuei/spiral_jetty_art_analysis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450046/normal_6059a82ca054c.pdfIn PDF document text
    • http://wulutapebime.getenjoyment.net/23826760142.pdfIn PDF document text
    • http://paxosij.mygamesonline.org/xerijesasilenukidipub.pdfIn PDF document text
    • http://helpcenterbusiness.xyz/11384807399tvb1b.pdfIn PDF document text
    • http://itverys.space/how_to_change_time_on_timex_ironman_watchncqw8.pdfIn PDF document text
    • http://zavodtriumf.com/bank_1_catalytic_converter_nissan_murano_2009b8ekd.pdfIn PDF document text
    • http://dasezin.getenjoyment.net/az_900_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489981/normal_5fdc44584e227.pdfIn PDF document text
    • http://bumumapa.mypressonline.com/bawibizonidijoj.pdfIn PDF document text
    • http://wdd13.ru/eheim_automatic_feeder_instructions2kzuk.pdfIn PDF document text
    • http://mastera-saydinga.ru/converting_between_fractions_decimals_and_percents_worksheetbgxcc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/clasificacion_de_las_cuentas_en_el_estado_de_resultados.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/management_reporter_ax_2012_user_access.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/acronis_backup_12_iso.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004dd1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DD1A 6440 bytes
SHA-256: 629123bfde0685c5f69bbdd27ec008bde0224d5c30af1dabb990f6ee33ea778e
font_01_sfnt_off0004ecde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ECDE 80188 bytes
SHA-256: 24f89ef43841a827610440fa460959a4a2eb29703e8c5edaba17ab6e7f84b4f4
font_02_sfnt_off0005ddd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDD7 5340 bytes
SHA-256: c51cd5a11bbf699ecc2c5e16194d2d4a78a650c89323cf1c47656dc603bd823c
font_03_sfnt_off0005efe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFE0 16528 bytes
SHA-256: 621ecc8e13d045aeb086f0d9dd6571c0e1dc4c1cf4af735a4cde206a46a55711
font_04_sfnt_off0006191f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6191F 22548 bytes
SHA-256: 6645fc6121fa594cbcb1dce47ae77e838ab75b4cc83133adf67f1a9a5bf01d0e
font_05_sfnt_off00065995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65995 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd