Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6828838a51734bc…

MALICIOUS

PDF

77.2 KB Created: 2021-03-14 05:33:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c441acae44d00ee72f81088d8335a42 SHA-1: a57fc4d0f1571ff1f76a9031809d03bd522b9e69 SHA-256: f6828838a51734bcfb7451b888d54d5688c06dbef3100393787a3c8bc5e6c388
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a domain that is likely used for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/wix?keyword=weider+8630+assembly+manual
    • http://jakusavu.sportsontheweb.net/wususevi.pdf
    • https://cdn.sqhk.co/vonezositixi/hghdJtV/run_that_back_turbo_tag_download.pdf
    • https://cdn.sqhk.co/biwezabob/hE8HLWf/gexofem.pdf
    • http://jasazotinalol.mygamesonline.org/business_english_books_free_download.pdf
    • https://cdn.sqhk.co/mewuxedodi/Ky1ifgi/36507666859.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bojafazes/52162966734.pdf
    • https://uploads.strikinglycdn.com/files/a1ae61a2-f28d-4de7-8dc6-bd1c5bea3e86/blue_jackets_vs_new_jersey.pdf
    • http://tixokozatupevoz.rf.gd/old_school_music_youtube.pdf
    • https://uploads.strikinglycdn.com/files/56f16099-102b-4181-9503-740e694c04d1/lujipatij.pdf
    • https://s3.amazonaws.com/degagaziv/pitovetamafe.pdf
    • http://kimafixenij.epizy.com/manualidades_hechas_con_papel_corrugado.pdf
    • https://s3.amazonaws.com/kofabube/puzamexabaxalofuta.pdf
    • https://uploads.strikinglycdn.com/files/f78dcb40-5ad7-42ab-bd70-cfc6fcb1f52d/79165453227.pdf
    • https://uploads.strikinglycdn.com/files/ea41f656-cbf0-4ebf-b950-829921ccf33c/cast_away_script.pdf
    • https://uploads.strikinglycdn.com/files/6c4127df-c199-4b35-8bd2-e77f09981fae/77727798765.pdf
    • https://s3.amazonaws.com/rawesaragegugar/first_conditional_board_game_worksheets.pdf
    • https://uploads.strikinglycdn.com/files/bf32a7a1-3473-4db7-b7e8-b0df154d399c/magic_chef_refrigerator_not_cooling_freezer_working.pdf
    • http://gepuxaxevo.rf.gd/vesuporudekemexeguvobawe.pdf
    • https://uploads.strikinglycdn.com/files/33fd1d61-a57e-4efc-919a-8a56ac3b2e76/classical_guitar_tabs_free.pdf
    • https://s3.amazonaws.com/pokixovuxik/conditional_sentences_type_3_printable_worksheet.pdf
    • http://dadewom.epizy.com/how_to_tune_a_edelbrock_avs2_carb.pdf
    • https://uploads.strikinglycdn.com/files/ef5f2c3d-02b5-4ddf-901c-13bc80540899/73408897006.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_off0000eb9c.bin
644fea8e00133504542db9195c6ab8f2962e7e2df78b4ccfe58be786b9cf8da2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9C 5880 bytes
font_01_sfnt_off0000ff8a.bin
3fce4d7ea6752b3a8309269ff8875df50b4003e0908acf531e4196f26371a352		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8A 12056 bytes

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