Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe54bfcd7a318d8…

MALICIOUS

PDF

78.2 KB Created: 2021-05-16 05:44:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 659707c9242015d0a4030109a7bd3b83 SHA-1: 454f1c36943423b4b6c48c377835b3ae53a8c52a SHA-256: 7fe54bfcd7a318d885670e6da4089fe3f3aacbbe268e331829d5f97bde72cc99
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically identified as a phishing trojan. The document body, though heavily obfuscated, contains text related to a movie search query, which is likely a lure. An external URI pointing to 'resalured.ru' was extracted, suggesting a redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://resalured.ru/strik?utm_term=what+is+the+very+first+marvel+movie
    • https://cdn-cms.f-static.net/uploads/4485153/normal_5fd67ec7b73c0.pdf
    • https://cdn-cms.f-static.net/uploads/4470553/normal_600dccfbb94b3.pdf
    • https://cdn.sqhk.co/xenetomapum/dbM6icr/66785387286.pdf
    • https://cdn.sqhk.co/popaxutu/ehgjbjj/zombie_smash_apk_uptodown.pdf
    • http://rebutawo.iblogger.org/how_much_discount_do_autozone_employees_get.pdf
    • http://wibifowomotab.iblogger.org/acls_provider_manual_2015_barnes_and_noble.pdf
    • https://cdn.sqhk.co/folikulezig/Uu3ueib/werugimo.pdf
    • https://cdn.sqhk.co/fujotojaxob/8ggjahi/sling_blue_channels_espn.pdf
    • https://cdn.sqhk.co/mezutowede/ohhgffe/dragy_drg_69_gps_performance_meter.pdf
    • https://static.s123-cdn-static.com/uploads/4453100/normal_5ff7ccc75a90e.pdf
    • https://cdn-cms.f-static.net/uploads/4447095/normal_60449695b9b55.pdf
    • http://silikidabog.22web.org/a_death_in_the_family.pdf
    • https://cdn-cms.f-static.net/uploads/4372382/normal_601130be5ae26.pdf
    • https://cdn.sqhk.co/xenivoronizu/hh3hfif/54288325674.pdf
    • http://wamagobegufif.iblogger.org/34399979058.pdf
    • https://cdn.sqhk.co/wamamuli/jgj8IFf/cake_cutter_wire_for_sale.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://resaralamefevep.epizy.com/cerebral_palsy.pdf
    • http://junedujivoxoz.epizy.com/capital_budgeting_and_estimating_cash_flows.pdf
    • https://s3.amazonaws.com/benubapopikaj/what_do_you_do_when_your_garbage_disposal_leaks_from_the_bottom.pdf
    • http://sotenuzalarabi.epizy.com/biology_classification_of_living_things.pdf
    • https://s3.amazonaws.com/ragejufa/86810279807.pdf
    • https://s3.amazonaws.com/tufujifinobiro/net_core_interview_questions_for_6_years_experience.pdf
    • https://s3.amazonaws.com/nuxulikiwab/manual_apa_6ta_edicion.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_off0000f20f.bin
679bda24109e0f3e5d91315e7af04a0090ae826cefc054525cb4717a7738739d
pdf-font-stream PDF embedded font (sfnt) at offset 0xF20F 5180 bytes
font_01_sfnt_off0001039b.bin
000556f2f091406caa2d6783a7d24f2191529be85f8077b83338f8ab558761be
pdf-font-stream PDF embedded font (sfnt) at offset 0x1039B 11024 bytes