Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fa17f9cf7668e5c…

MALICIOUS

PDF

78.3 KB Created: 2021-04-13 00:45:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cb718f61c72f6362e730f0841b5b746 SHA-1: 0e0178544cf94873d5455e205e7978c9bd2f5b8c SHA-256: 4fa17f9cf7668e5cc51213a00446c5b12e5e9185ec74e4fe2b94b60d25da481b
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains references to 'Greek god boy names' and appears to be generated by wkhtmltopdf, suggesting a lure to a URL. The embedded URL 'https://crophysi.ru/strik?utm_term=greek+god+boy+names+that+start+with+a' is the primary indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/strik?utm_term=greek+god+boy+names+that+start+with+a
    • https://cdn.sqhk.co/zejejofe/nbgjzhc/stock_zacks_rank.pdf
    • http://bikelumonekodex.mygamesonline.org/the_avengers_comic_book_1.pdf
    • http://bukupiduge.mypressonline.com/67787936789.pdf
    • http://bitiwiz.medianewsonline.com/brochure_examples_for_travel.pdf
    • http://jigikujed.scienceontheweb.net/12718763490.pdf
    • https://cdn-cms.f-static.net/uploads/4424689/normal_60179a64e1c08.pdf
    • https://static.s123-cdn-static.com/uploads/4415742/normal_5fc932ba5fe97.pdf
    • https://cdn-cms.f-static.net/uploads/4427529/normal_601704b43b6a1.pdf
    • http://fastpeysistem.online/padi_advanced_open_water_diver_max_depthy2avj.pdf
    • https://cdn.sqhk.co/fapiwejagiz/hfrjigd/silent_gif_that_you_can_hear.pdf
    • http://onlinekartiadesi.com/what_university_is_best_for_medicinewm9uz.pdf
    • https://cdn-cms.f-static.net/uploads/4407986/normal_5fd7d4740ecf9.pdf
    • http://prosale.company/48317992858slgxw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9e0dae9f-c432-40c0-a08f-6865527e97b6/oracle_sql_replace_case_insensitive.pdf
    • https://uploads.strikinglycdn.com/files/e3b8e162-878f-4306-832d-fe8e19f6e091/html_css_javascript_jobs_near_me.pdf
    • https://58960a86-a3f4-42d8-866e-ee2cf32068b1.filesusr.com/ugd/1ad962_0170eea43ff64ca5a2fc2b6251cbe7b6.pdf?index=true
    • https://uploads.strikinglycdn.com/files/4697ddfd-d07f-4299-a936-e0922d922729/rosexujudenusemu.pdf
    • https://8a6b9437-e7f2-49d7-8c24-351b272aa67a.filesusr.com/ugd/b18e4d_16da40cfab244d82a2a06a6f2e1358a8.pdf?index=true
    • https://uploads.strikinglycdn.com/files/484369a5-c59a-4864-b168-a56cf5a3f632/how_to_cook_beans_in_an_electric_pressure_cooker.pdf
    • http://sewujajapivix.onlinewebshop.net/renibedaguluxuvejida.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_off0000f3d6.bin
7cf8a3e66d6ef558b366d5cd1c4e922e6e86f59a07304764f68d8d295f09aa8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D6 5636 bytes
font_01_sfnt_off000106f8.bin
9992c02587fdb79918e7155c31acdf5b835956780d93206618be754fc1f0758d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106F8 10864 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.