Malicious PDF — malware analysis report

Static analysis result for SHA-256 d67ca3fb7800950d…

MALICIOUS

PDF

80.3 KB Created: 2021-03-21 11:12:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af45c8169d2949de1200b130e2a89781 SHA-1: 27c742efc80fd67489751dc96a48ed00479f0d00 SHA-256: d67ca3fb7800950d9b5acbc44e9fa0624a55fc2f1ebf092c7c9f4a338cb88115
104 Risk Score

Malware Insights

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

The file is a PDF that contains an external URI pointing to a suspicious domain, identified as malicious by ClamAV and an ML classifier. The document body, though heavily obfuscated, suggests a lure related to 'Anandamela pujabarshiki 1425 pdf', and a heuristic indicates the presence of urgency language. The embedded URLs are likely part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dafemum.ru/123?utm_term=anandamela+pujabarshiki+1425+pdf
    • http://instapriz24.online/marisa_peer_ultimate_confidence_downloado8eda.pdf
    • http://bodinimat.iblogger.org/game_of_thrones_books_box_set.pdf
    • http://cocobuka3.xyz/zomixagixomoledaxggshu.pdf
    • http://cesaregaspari.com/term_end_assignment_paper_ignouvv1tc.pdf
    • http://everydayy.fun/1468385194kqhi0.pdf
    • http://slimerecipe.org/doteruxowedegidojumev20iwk.pdf
    • http://help-copyrighteamservice.com/how_to_edit_a_photo_using_paintsx694.pdf
    • http://setlyb.online/brother_hl-5450dn_printer_drivergoyao.pdf
    • http://verefdliyvtorogo.xyz/dosaxajizotojerowispjd4.pdf
    • http://betmoy56.com/bseb_tet_2019_admit_carddjpyy.pdf
    • http://uuuuull.space/best_bingo_games_for_ipad1v54p.pdf
    • http://yourlivehelp.com/how_to_drain_craftsman_lawn_mower_oil6avri.pdf
    • http://sanatoriy-izumrudny.ru/grade_6_math_makes_sense_workbook_answersccsux.pdf
    • http://www.anand
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mibiwivanetuj/c_r_p_f_information.pdf
    • https://03df18d0-0a94-4077-8b44-1f3cf8b7c870.filesusr.com/ugd/23a6c3_1603c807a50348208590d26eea502b18.pdf?index=true
    • https://s3.amazonaws.com/pegozegi/how_much_do_interior_designers_make_in_miami.pdf
    • https://s3.amazonaws.com/guwutivupudutu/31731986418.pdf
    • https://78636f1b-f2d6-4e4a-b4e1-07eac4c165d1.filesusr.com/ugd/434c97_efdb38560dc74ff1aefa02e7d9b9a52c.pdf?index=true
    • https://s3.amazonaws.com/womirofop/batuxesamezaditi.pdf
    • https://52c77544-2eb8-427c-ad0e-a8a7e2ea9366.filesusr.com/ugd/93288f_91c49e7de8244b42a7c13d60aefa0aad.pdf?index=true
    • https://c183b790-cb34-49aa-848e-1a9f2b14dda3.filesusr.com/ugd/d8966e_6ce71204c34e4d2b9a3b8d2bccef8eb6.pdf?index=true
    • http://filabos.epizy.com/pusolazimibarofinabipofum.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da50.bin
3435c45df7ca030c1b3ac432f16dfe93a862c04771b0eb8bb02342ded6e33c9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA50 5948 bytes
font_01_sfnt_off0000ee65.bin
4e27dc3e5153f2517d51a853237ab17d27519feb772f048a57b07b47f9daedd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE65 9324 bytes
font_02_sfnt_off00010c02.bin
4cb7e65c43c590ed36a55ce2270e65ce6d0268b0ce1920f4b811867545410ed9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C02 11104 bytes

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