Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cce6a50b3e7dad9…

MALICIOUS

PDF

78.7 KB Created: 2021-03-29 10:14:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6ef04c88152bd082ab0fc319ad6fb94 SHA-1: 75e772eb6860ba84aae59e491392d282073f076f SHA-256: 5cce6a50b3e7dad952a4721e4618abaf42e50d70c9e745e6dd301566c2277cbb
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically 'https://vilenefex.ru/strik?utm_term=latest+roku+models+2020'. The document body, though heavily obfuscated, contains text related to 'Latest roku models 2020', suggesting a phishing or scam lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=latest+roku+models+2020
    • https://cdn.sqhk.co/wekaradukuve/gtPbtgj/line_of_defense_tactics_gameplay.pdf
    • https://cdn.sqhk.co/wemerofada/H2hajj1/suzof.pdf
    • https://cdn.sqhk.co/metexemoraga/aFggujd/97236730598.pdf
    • https://cdn.sqhk.co/pimabosi/hesggAi/63456210622.pdf
    • http://losusosemusisi.iblogger.org/scratch_game_programming_for_young_adults.pdf
    • http://jolijivik.scienceontheweb.net/33708558023.pdf
    • http://dexuposi.sportsontheweb.net/ataullah_iskenderi.pdf
    • https://cdn.sqhk.co/tosolizidovi/bEhh1ja/channel_tunnel_information_facts.pdf
    • http://sugogojewa.iblogger.org/43528475528.pdf
    • http://lojapidabud.mypressonline.com/62138838424.pdf
    • http://tuwuviji.iblogger.org/acrobat_reader_dc_free_windows_7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dibibum.epizy.com/nevazojivekemenozerol.pdf
    • http://vekamodadon.onlinewebshop.net/jee_main_b_arch_previous_year_question_paper.pdf
    • https://s3.amazonaws.com/tikoweravisixu/venej.pdf
    • http://tameladizikep.atwebpages.com/xizivewuno.pdf
    • http://wilanutoroguzif.rf.gd/76976974612.pdf
    • http://janalusexisowa.epizy.com/detovimotujevo.pdf
    • http://tigefaxoweta.rf.gd/mokurametusabumutapivev.pdf
    • http://litolutu.rf.gd/tail_risk_hedging.pdf
    • https://s3.amazonaws.com/rikolesafuwofar/carrier_30gxn_chiller_troubleshooting_manual.pdf
    • https://s3.amazonaws.com/kesumasaka/icd_10_code_chiari_1_malformation.pdf
    • https://s3.amazonaws.com/bidivo/39074507385.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_off0000f690.bin
280e29f02b1e069f8cde01a44520614323a9b4c355d92c45cc1730722a3e6492
pdf-font-stream PDF embedded font (sfnt) at offset 0xF690 5248 bytes
font_01_sfnt_off00010857.bin
d12b9467cede8632d3ec247e63a0384392b31780fcedb93e407143815ab2dd17
pdf-font-stream PDF embedded font (sfnt) at offset 0x10857 10976 bytes