Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f9f6e8d8698f14c…

MALICIOUS

PDF

76.6 KB Created: 2021-03-19 06:33:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fe3e7e6edb8bcadeacfb56d2408c49f SHA-1: e694fa6c54fae52a6d2af9d07750a9282446860b SHA-256: 9f9f6e8d8698f14ca2e46202671c6fd9fef80ed52574aeb9ed61324cfcb5cec5
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and other extracted URLs suggest a phishing or malware distribution scheme, masquerading as a technical document. No scripts were extracted, but the presence of external URLs points to a download or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://kuzutuzo.ru/wix?keyword=dewalt+dw321+parts+diagram
    • http://mnclassis.org/vuwimekuxidiratojofmge3.pdf
    • http://hookup153.online/best_video_recording_camera_app_for_androidhsnvc.pdf
    • http://henrysavbr.site/applied_numerical_methods_with_matlab_for_engineers_and_scientists_slader0gctu.pdf
    • http://dompodklyuch.com/34_85hcgfu.pdf
    • https://salexutoxor.weebly.com/uploads/1/3/4/7/134761189/kuxanejo.pdf
    • http://potusowo.22web.org/tv_news_reporter_salary_philippines.pdf
    • http://fuxewofuwikafu.iblogger.org/zegurax.pdf
    • http://erogan-encolumbia.site/supubulofiwifezimudawawivfulw6.pdf
    • https://togutugu.weebly.com/uploads/1/3/4/6/134617883/vajetojejubi.pdf
    • http://mawobireti.iblogger.org/sairat_flute_ringtone_zedge.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://f37c3615-20b0-4e70-b1e7-2acf34113780.filesusr.com/ugd/1e533a_3f65738bbd784e6885ac97c80d3d2381.pdf?index=true
    • https://uploads.strikinglycdn.com/files/634db6f5-8517-4552-98f8-8da5b90ba7da/nopogux.pdf
    • https://uploads.strikinglycdn.com/files/4285f8c1-72c8-4fe5-9ccc-2b9b0fc96a04/how_to_bypass_nordictrack_ifit.pdf
    • http://rorojuzuravix.epizy.com/serokapavefe.pdf
    • https://uploads.strikinglycdn.com/files/1460cf03-1328-4bfa-b2f2-69baf966db7b/shimano_alfine_8_adjustment.pdf
    • https://uploads.strikinglycdn.com/files/6ad9126e-63cc-497e-879d-5a8c54e34218/how_to_connect_a_rca_remote_to_a_panasonic_tv.pdf
    • https://bef89f6e-6323-4b84-ad9d-a44490bfcc4f.filesusr.com/ugd/96768c_d6d6a8ea603f40159cfa06e5cda08dcc.pdf?index=true
    • https://6e37e838-c278-4d46-baa9-25b8497af200.filesusr.com/ugd/fbcb80_e19420b3e8c545968eec66e17d789edb.pdf?index=true
    • https://ec8c99fd-5413-4e38-b6a0-2ccbba71fc6f.filesusr.com/ugd/de02f3_148034551c564b368e5370388e73305d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/bbb56699-138c-447d-8595-120f0d5c09ce/defending_jacob_ending_explained_book.pdf
    • http://tefesapebeto.rf.gd/30501537358.pdf
    • https://1a2149e7-ca7f-4e7c-a584-0e483de6f3af.filesusr.com/ugd/9219f8_24c4e137d01b4a689b9ccde989c3ddd6.pdf?index=true
    • https://uploads.strikinglycdn.com/files/32dae592-24d0-4ea5-832a-cadfeb9f97e0/how_do_i_watch_the_stock_market_live.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_off0000ef2e.bin
4286bc44672ddc41ecf8267d217f47a61994d755a94c643991533674374a2958		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2E 5720 bytes
font_01_sfnt_off000102ae.bin
a237e1bc0548e9acc056448905b9588faf7d90d8ab411c9476bc84bee76ef650		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102AE 9956 bytes

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