Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd3598fd6b6cfd83…

MALICIOUS

PDF

76.3 KB Created: 2021-03-18 05:19:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1118b70ded6178dc223bbae01b1d1122 SHA-1: 75ce61bf572c906e1e06b2129a08e2d3e9ab2843 SHA-256: dd3598fd6b6cfd83d5d686082c16282efb0107b031c860b6ead515841a6d9d3b
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document employs social engineering tactics, including urgency and payment redirection lures, to trick users into interacting with malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL suggests the document is designed to lead the user to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://crophysi.ru/award?keyword=accounting+skills+pdf
    • http://vadosixajobirug.mygamesonline.org/44790134145.pdf
    • https://cdn.sqhk.co/zipedufipiz/UePieXg/spaceballs_2_trailer.pdf
    • https://cdn-cms.f-static.net/uploads/4366312/normal_6043ff0b7004f.pdf
    • http://fresh-ita.space/one_thing_remains_jesus_culture_chords63i8q.pdf
    • http://womenita.fun/nikon_n80_priceyb55d.pdf
    • http://cparta.moscow/31176751320ywdyu.pdf
    • https://static.s123-cdn-static.com/uploads/4427287/normal_60078c73cf4fe.pdf
    • http://freshmind.net/mupafekuzugesa04xsy.pdf
    • https://static.s123-cdn-static.com/uploads/4415326/normal_5fefeeaec3ce2.pdf
    • https://cdn.sqhk.co/luvutagawata/hfLDFhi/stick_fight_2_infinity_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4411917/normal_600e6b033a887.pdf
    • http://community-day.ru/measuring_angles_worksheet_answer_key_geometrybemvl.pdf
    • http://igcopyrightverify.com/salesforce_logo_brand_guidelinesudckv.pdf
    • http://theraisins.pro/cuantos_libros_son_de_juego_de_tronoshnn2v.pdf
    • http://vixabaj.scienceontheweb.net/billie_s_bounce_guitar_tab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fajujiju/chrysotile_asbestos_safety_data_sheet.pdf
    • https://s3.amazonaws.com/zisulamisozoto/fowexojunu.pdf
    • https://s3.amazonaws.com/tetenifeme/15813503590.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_off0000ee09.bin
907706db6af327de625366ab0308d44c61cdef298bf492f7630683ff5e4e50dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE09 5072 bytes
font_01_sfnt_off0000ff70.bin
5919a73e2197a43f698967d81c9347390bc2f426ebbc4aee93bf5be5857437e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF70 10968 bytes

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