Malicious PDF — malware analysis report

Static analysis result for SHA-256 51abe4da3ead0e2f…

MALICIOUS

PDF

72.5 KB Created: 2021-04-21 01:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6ab0d4c5c0d308d35f572aae16eb638 SHA-1: baca249263373515af12623af723562f6439103a SHA-256: 51abe4da3ead0e2ffe7590755bca003d99840b932747de0fa93f83ad2a1ae091
94 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. ClamAV and ML heuristics also flagged the file as malicious, specifically identifying it as a phishing trojan. While no scripts were directly extracted, the presence of an external URI suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8094

Heuristics 3

  • 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
  • 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://maypoin.ru/strik?utm_term=1995+skamper+pop+up+camper+specs
    • https://cdn-cms.f-static.net/uploads/4500893/normal_601ce5db159d2.pdf
    • http://koreanluxe.com/how_to_fix_roomba_charging_error_50ar7e.pdf
    • http://lezeninimi.medianewsonline.com/liropenofirixotumo.pdf
    • https://cdn-cms.f-static.net/uploads/4458125/normal_606b490d11cd7.pdf
    • https://cdn-cms.f-static.net/uploads/4383798/normal_603b0bf03c838.pdf
    • http://afracheat5.xyz/word_board_generatorai0bd.pdf
    • http://ninarekazo.iblogger.org/star_trek_enterprise_season_4_episode_12.pdf
    • https://cdn-cms.f-static.net/uploads/4379053/normal_602d1fb02c4a0.pdf
    • http://zuzorovix.scienceontheweb.net/garmin_oregon_600_firmware_updates.pdf
    • http://yoptan.space/53022803201gy18j.pdf
    • https://cdn-cms.f-static.net/uploads/4464996/normal_603994d0c55ca.pdf
    • https://cdn-cms.f-static.net/uploads/4393033/normal_6038044aed3b2.pdf
    • http://wubujonil.getenjoyment.net/mossberg_500a_12_gauge_stock.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://barukes.epizy.com/what_is_a_word_for_moonlight.pdf
    • https://s3.amazonaws.com/fazujo/balloon_bow_and_arrow_game_free.pdf
    • http://nulesuli.epizy.com/nobleness_enkindleth_nobleness_questions_and_answers.pdf
    • https://s3.amazonaws.com/xakusineba/8025075955.pdf
    • https://s3.amazonaws.com/netinuwa/bofebize.pdf
    • http://vadibulifuwu.rf.gd/fewifiniwozolaser.pdf
    • http://darelarara.epizy.com/rokejin.pdf
    • https://s3.amazonaws.com/polojuliragam/3d_design_bed_sheets.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee3e.bin
f206bd9801435373b0b83b1ce417593ff2f336b003e2f115f532dc9f3652551b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3E 5348 bytes
font_01_sfnt_off00010063.bin
0237c2f75a7dacaf625792cb8cc25f56c10cad45d79956e184cde34e921a5693		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10063 11224 bytes

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