Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fc294e051688a61…

MALICIOUS

PDF

79.0 KB Created: 2021-04-06 12:28:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55275b2c4bfc56d4c07b0d5610ff9cd5 SHA-1: 90c126e81a6e5e95419e2c3d034cd788c4ae8645 SHA-256: 5fc294e051688a61db719ebb883be20bc3de2ebf55b6f594e5834eba48b7fc2b
96 Risk Score

Malware Insights

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

The sample is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains an embedded URL pointing to 'https://xezojetit.ru/strik?utm_term=cannon+sentinel+24+gun+safe+review', which is likely used to deliver a phishing page or a second-stage payload. The document body, though heavily obfuscated, appears to reference the URL's theme of a gun safe review, suggesting a social engineering lure.

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://xezojetit.ru/strik?utm_term=cannon+sentinel+24+gun+safe+review
    • https://cdn.sqhk.co/jolodovi/agiidlQ/59005314283.pdf
    • https://cdn.sqhk.co/jenetuwuda/ZX3J7PH/wingstop_locations_in_us.pdf
    • https://cdn.sqhk.co/zaliroded/3jdGgcO/social_trends_browse_trending_by_country.pdf
    • https://cdn.sqhk.co/toxinize/hzlktIj/64414822700.pdf
    • https://cdn.sqhk.co/givesaxi/DAtjhjb/nomudupaguvezetuzofo.pdf
    • https://cdn.sqhk.co/bomumuxa/ax5Nuhg/ben_10_omnitrix_hero_mod_apk_unlimited_money.pdf
    • https://cdn.sqhk.co/zitajazasu/plehbm1/20267068095.pdf
    • https://cdn.sqhk.co/sarunasol/jEpOZZl/mulofesokozun.pdf
    • https://cdn.sqhk.co/jelasusoved/gP2VifP/lotidaxigujakelikujar.pdf
    • https://cdn.sqhk.co/lafuwexale/iep1e2G/traffic_racer_real_game.pdf
    • https://cdn.sqhk.co/jagavibejabe/gc56hf7/nutalufibidago.pdf
    • http://misefosoteb.iblogger.org/irobot_roomba_e5_5134_reviews.pdf
    • https://cdn.sqhk.co/lanumakefu/iLiafie/55100810893.pdf
    • https://cdn.sqhk.co/bimonabozo/jahhige/vertical_packaged_air_conditioning_units.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gorajikunobixi/11722245898.pdf
    • https://s3.amazonaws.com/davubewu/ziwenuzekexifafenubop.pdf
    • http://bibubojudij.rf.gd/brigandine_grand_edition_knight_guide.pdf
    • http://kimises.rf.gd/why_does_my_fire_alarm_keep_beeping_every_minute.pdf
    • https://uploads.strikinglycdn.com/files/382db48e-6984-471c-99b5-382799d1235d/hp_34401a_multimeter_service_manual.pdf
    • https://s3.amazonaws.com/lofese/erno_laszlo_white_marble_sheet_mask.pdf
    • http://ganasoniledaw.rf.gd/aprender_espanhol_online_gratuitos_com_certificado.pdf
    • https://uploads.strikinglycdn.com/files/bcec1868-c9c8-4faa-98d3-d578f8912032/what_if_i_never_get_over_you_lyrics_by_lady_antebellum.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_off0000f386.bin
b28e1b27929ecbd9438c06b3853030705c9b0cdec9c459a9cf6d99807bce2177		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF386 5212 bytes
font_01_sfnt_off0001056e.bin
81358e97a5680ef9b659f22af39a39e9445b3a7688ce1f9c958cfca5d261e218		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1056E 11524 bytes

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