Malicious PDF — malware analysis report

Static analysis result for SHA-256 8337ff00d8423aff…

MALICIOUS

PDF

95.4 KB Created: 2021-03-06 07:00:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a3724d3ff1b49474f4b069b84cf360a1 SHA-1: 193c549a7e4a932483856dd252a436bf98e9b8b7 SHA-256: 8337ff00d8423aff88c835769073bdf1fdbaa0072d07e65bf6be0cd0c01f01ae
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 0.9990

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=fearless+album+josh+a PDF link annotation
    • http://zemawage.22web.org/33052458394.pdfIn PDF document text
    • http://fewudutizoxom.medianewsonline.com/43357433252.pdfIn PDF document text
    • http://joteruzawareba.iblogger.org/instagram_video_er_online_free.pdfIn PDF document text
    • http://kadaxejob.mypressonline.com/sears_5hp_chipper_shredder_manual.pdfIn PDF document text
    • http://xexogafuko.22web.org/50818520320.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/83279974776.pdfIn PDF document text
    • http://vienvozvrat.site/dc_self_insert_fanfictionojcdl.pdfIn PDF document text
    • https://cdn.sqhk.co/bemoranoz/wuGBjbc/movie_riddle_quiz_with_answers.pdfIn PDF document text
    • http://igonlinesupport.com/el_lazarillo_de_tormes_resumen_del_tratado_5d8aha.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/fylhigj/windows_7_lock_screen_password_reset.pdfIn PDF document text
    • https://cdn.sqhk.co/lowixadoges/bdhcVid/refugovakeluwubuge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/risid.pdfIn PDF document text
    • http://punegisegavugaf.epizy.com/82347342418.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/gevupaxexabodemelesevidi.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/tilutis.pdfIn PDF document text
    • http://gegenig.epizy.com/metformin_weight_loss_antipsychotic_induced_weight_gain.pdfIn PDF document text
    • http://jodirexefakevub.rf.gd/sait_electrical_engineering_technology_courses.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/38612753965.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/gavovukitenawokatof.pdfIn PDF document text
    • http://walefusariwe.epizy.com/tifamajirofuvewalotagek.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
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e13a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13A 5096 bytes
SHA-256: e1e516c41f4a44eff6a1906bf43de315a60d91efc09d1516642fd57107204d50
font_01_sfnt_off0000f262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF262 9292 bytes
SHA-256: 1f9f2e2472e1165fcf4205ad9a6997867b7c353b712dd905b23a4358fb9e4339
font_02_sfnt_off00010509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10509 11796 bytes
SHA-256: c5b8ecc0c7b22771c3cf09d8395e7490723c10faab312b24594f22b96f655d62
font_03_sfnt_off00012701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12701 12492 bytes
SHA-256: c082ad69bdb2ffb020b21d8e00d543918ee7ba18f5abeb67b22d6e9f03c4fadf
font_04_sfnt_off0001511d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1511D 18532 bytes
SHA-256: fd45ef303034b8d012f627ab421c8e5c9a692a4345883bbacfb5005b3edd0289

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