Malicious PDF — malware analysis report

Static analysis result for SHA-256 693b0417245deccd…

MALICIOUS

PDF

97.4 KB Created: 2021-03-30 21:12:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 698bac9748838f53b41262fd8b238a40 SHA-1: 6c22984305ea2a9c9eb71069e08ce8eb00172a4d SHA-256: 693b0417245deccda13d77920bd4532ec65b34b1415849a795e2dd19b36c697b
136 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with high-confidence heuristics indicating it's a phishing lure for a password-protected archive. The embedded URL `https://midufefew.ru/wix?keyword=bellsouth.net+imap+settings` strongly suggests a phishing attempt related to email account settings. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious intent to trick users into visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://midufefew.ru/wix?keyword=bellsouth.net+imap+settings
    • http://naturaitalia.space/how_to_add_fractions_with_variables_calculatorunxnq.pdf
    • http://srakan.space/noxarubemoxojepukem523qx.pdf
    • http://dasezin.getenjoyment.net/xideke.pdf
    • https://cdn.sqhk.co/zodavujera/XcjftZE/jivadufuzakaw.pdf
    • http://chaptejvxz.fun/racing_rules_of_sailing_appendix_t8d0p0.pdf
    • http://jovopomutulilo.medianewsonline.com/dovoki.pdf
    • https://cdn.sqhk.co/sisadenev/ghEP5ig/eso_master_crafting_writs_drop_rate.pdf
    • http://wegansit.space/jelev4ij0c.pdf
    • https://cdn.sqhk.co/dupetodim/XihZMig/tenacious_d_songs.pdf
    • http://disozire.mygamesonline.org/aligarh_movement_notes.pdf
    • http://nozumupi.medianewsonline.com/banking_and_finance_book_download.pdf
    • http://vovavipegum.getenjoyment.net/present_value_of_annuity_due.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a017b47e-35ea-42fa-8dcf-01eeb31b6649/cateye_velo_plus_wireless_review.pdf
    • https://6f0a1f77-3195-4c90-aae7-8e5805bb56bd.filesusr.com/ugd/f94fd0_9df320a9f8be4f58803d7436766f4d70.pdf?index=true
    • https://cd29ef07-728f-4a0b-b57b-23e770395c36.filesusr.com/ugd/f14cf6_5f3cb06ef41445009270def8b30d254a.pdf?index=true
    • https://s3.amazonaws.com/bovenotojitowe/activate_windows_8_pro_free.pdf
    • https://s3.amazonaws.com/natewared/international_guidelines_for_asthma_management.pdf
    • https://s3.amazonaws.com/sefepugolupalax/regression_line_worksheet_mma_answers.pdf
    • https://uploads.strikinglycdn.com/files/72eb1fa5-6d5c-4e80-b84d-844354fc5658/88368289759.pdf
    • https://e60c805d-b9e1-47fc-b045-983511e9ac1f.filesusr.com/ugd/116bb2_18c5130a16d54a0ba6c5bba25b583ad9.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7d50f65d-01e7-4114-8b40-89eba3bc355f/microsoft_project_management_software_free_trial.pdf
    • https://0b7b936c-93ac-4a60-9644-6ba220b934cc.filesusr.com/ugd/b4bf80_d3f92f355af0441293bc9c64ee87db10.pdf?index=true
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f4e.bin
c7b7e9221f94bd8fd6b576f2846320b68251179d29649b80fd6cba261e201a1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F4E 5220 bytes
font_01_sfnt_off000130e7.bin
e035dfa831b233684d13b27fc00f78ac6af260a43a97dfbfb6a4cd733e811cf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130E7 2112 bytes
font_02_sfnt_off00013ab8.bin
2636db02a6a584a2992d04d88be8ab4e5acd9c6cf5c14248bf8021cd4b375d83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13AB8 11504 bytes
font_03_sfnt_off00016253.bin
afef7078cb2df19c3af6e0a290a1e91943695396d6c8eacc2b40ed28c0b27951		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16253 16120 bytes

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