Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c58a8a6b489199…

MALICIOUS

PDF

124.4 KB Created: 2021-05-09 16:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9968215a7475a2790afc87348d936077 SHA-1: a33f1e18d9869e2a7351d2033e67d48bdfadfd9e SHA-256: 93c58a8a6b48919922dafc8d88badb83e2bcc5c933cdd0cf400e90e948f67cff
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 phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URLs strongly suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://dafemum.ru/strik?utm_term=sammy+from+a%2526p+character+analysis
    • https://cdn.sqhk.co/jigitovewuk/ykQKjib/34267613158.pdf
    • https://cdn-cms.f-static.net/uploads/4417530/normal_603d8bc04731e.pdf
    • http://lujedovijoluje.22web.org/atopic_march.pdf
    • https://cdn.sqhk.co/gowozepugax/YheTPCj/butterball_oil_free_turkey_roaster_manual.pdf
    • https://static.s123-cdn-static.com/uploads/4496597/normal_5fc939b25de88.pdf
    • https://cdn-cms.f-static.net/uploads/4470967/normal_601bb39503141.pdf
    • http://xitimudajejo.mywebcommunity.org/enlaces_quimicos_y_sus_tipos.pdf
    • https://cdn.sqhk.co/rabovafom/j2gehcj/spider_man_running_games_online_no_download.pdf
    • https://cdn.sqhk.co/sokavuwoz/emUFjg5/bts_dynamite_lyrics_meaning_in_telugu.pdf
    • https://cdn-cms.f-static.net/uploads/4457590/normal_60383dd634903.pdf
    • https://cdn-cms.f-static.net/uploads/4485801/normal_604334bb24436.pdf
    • https://cdn.sqhk.co/nisisepolo/Shhnf8d/new_bright_rc_buggy_vortex.pdf
    • http://uptodate.site/how_to_check_transmission_fluid_on_2004_dodge_dakotakarsx.pdf
    • https://cdn.sqhk.co/xixujipum/hemSWie/screen_timeout_settings_windows_7.pdf
    • http://idealicaitalia.website/73765935930giak7.pdf
    • http://freshka.fun/4275645867vvgqx.pdf
    • http://dalosizofovabes.medianewsonline.com/79411114651.pdf
    • http://napodosawukezob.getenjoyment.net/21133798403.pdf
    • http://mewudaguzexo.sportsontheweb.net/mapefim.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mogegan.epizy.com/anticancer_drugs_classification.pdf
    • http://sosozodazu.epizy.com/best_computer_networking_books_2020.pdf
    • http://dimebuturerab.epizy.com/agronomie_moderne.pdf
    • http://jadivepijuga.myartsonline.com/afro_latin_american_and_popular_music.pdf
    • http://sizatopus.rf.gd/free_bible_commentary_in_easy_english_deuteronomy.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_off0001a27a.bin
1872adb06f10f8a6789d26c8ae45b9d8064fe4255708328dc8e8308067f39fd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A27A 4908 bytes
font_01_sfnt_off0001b323.bin
7c4b6ab8187dfccce84cacf7be8dc952ce3bbb9ce753a3e16d7e64da658e5138		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B323 19484 bytes

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