Malicious PDF — malware analysis report

Static analysis result for SHA-256 6074407aae929c45…

MALICIOUS

PDF

75.1 KB Created: 2021-03-22 08:58:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e09dc8d7f6dbe99173a72b305be4be4 SHA-1: 6f1a4849c11f6305a8cf7afcb5764c2f511a0cfd SHA-256: 6074407aae929c4572dcae843b43397899671121de3e17917f751e7a7085bb2a
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'dafemum.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains keywords related to information processing, suggesting a lure to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dafemum.ru/wix?keyword=information+processing+cycle
    • http://pifadopagel.scienceontheweb.net/44032354548.pdf
    • http://biwiroxefamir.mywebcommunity.org/cinema_4d_beginner_tutorials.pdf
    • https://cdn.sqhk.co/seseniluvus/IkjchcC/maha_cartoon_tv_video_mein_dikha_download.pdf
    • https://cdn.sqhk.co/gobuwovuv/tFIhho7/defense_zone_3_ultra_hd_apk.pdf
    • https://cdn.sqhk.co/seranowe/jbgewig/dawavejifufujiz.pdf
    • http://nuzarekuzugav.mypressonline.com/27549468466.pdf
    • http://viziziziv.mywebcommunity.org/49325446006.pdf
    • http://vizojuzoninunoz.scienceontheweb.net/mesupezoxalirajogobikizuf.pdf
    • http://rumurel.mywebcommunity.org/how_to_test_words_per_minute_reading.pdf
    • http://kulotufiw.mypressonline.com/advanced_excel_course_tutorial.pdf
    • http://mekapidi.medianewsonline.com/election_result_2020_list.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f3c1b417-b8ca-4f5b-8b2e-4eaa0c3b9d43/89028232696.pdf
    • https://uploads.strikinglycdn.com/files/2555c363-081e-43b8-a857-2ce1953016de/apc_back-ups_xs_1000_will_not_turn_on.pdf
    • https://uploads.strikinglycdn.com/files/f7afc5b9-3d68-453a-aafc-57e62bb14404/how_do_you_reset_a_mitsubishi_mini_split.pdf
    • https://55963656-6eb1-4b25-bcd5-bb835d65808b.filesusr.com/ugd/0064ae_3961206c61bb44e28448d1e6ebb8345a.pdf?index=true
    • https://61249681-e2d1-4375-841a-b3723294d79c.filesusr.com/ugd/3d514e_04b601e499c740fea8387a42a7691392.pdf?index=true
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_7517d33ee2644024a975f6a46ba1f2d5.pdf?index=true
    • https://737bf953-b780-43bc-8af0-312ed5328a40.filesusr.com/ugd/017c44_f2be372f4f244214809084a32890da3e.pdf?index=true
    • http://tofilijewok.atwebpages.com/95524690490.pdf
    • https://44407f20-7244-4107-9544-84d8151b6f9a.filesusr.com/ugd/8508de_0ab14230c41e4e788ed603de97a07721.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9a1.bin
e4049cff969cba197a665610976e1ab71f57e94d0f7f9efb7de3d76b33fbf897		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A1 5376 bytes
font_01_sfnt_off0000fbdd.bin
1c222525fbadacaeac28c58807feef392f74947824bd28a7e01afc14a1e54768		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDD 10412 bytes

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