Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbbab531a5da21d4…

MALICIOUS

PDF

78.2 KB Created: 2021-06-01 03:13:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea777feafa720da77ec5b7e90ca24d87 SHA-1: d3c611f4f935a9877ba396dc5336d7f6dabc8159 SHA-256: fbbab531a5da21d4451f9d4f95932d6d6218c4f9d7975acb2bff96201bbbf43d
96 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a payload or redirect the user. The document body, though heavily obfuscated, suggests a lure related to 'Capitana marvel comic 1 pdf', indicating a phishing or social engineering attempt.

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://jumiwimov.ru/123?utm_term=capitana+marvel+comic+1+pdf
    • https://static.s123-cdn-static.com/uploads/4460980/normal_5fcd13944f06d.pdf
    • https://dodaxopaz.weebly.com/uploads/1/3/4/8/134865523/getamalas_zosorur_poboziri.pdf
    • https://sowuritujozefa.weebly.com/uploads/1/3/4/6/134621612/5cd48627.pdf
    • https://pururejipe.weebly.com/uploads/1/3/4/2/134265449/vamena.pdf
    • https://jutamuxenaritul.weebly.com/uploads/1/3/1/4/131452982/nakafodaxolite.pdf
    • https://lefeputabewaro.weebly.com/uploads/1/3/2/6/132695219/ruvojukepofo.pdf
    • https://cdn-cms.f-static.net/uploads/4491927/normal_6025bd4d835bb.pdf
    • https://kabokikofonesa.weebly.com/uploads/1/3/1/6/131637300/jemikon.pdf
    • https://cdn-cms.f-static.net/uploads/4424682/normal_603e3ec84ce25.pdf
    • https://kapiromus.weebly.com/uploads/1/3/5/3/135345701/dadawulibepim.pdf
    • https://cdn-cms.f-static.net/uploads/4455381/normal_5fdc503b396c6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://garigor.pbworks.com/w/file/fetch/144424743/que_paso_ayer_4_pelcula_completa_en_espaol_latino_youtube.pdf
    • https://uploads.strikinglycdn.com/files/94d63845-a8e8-4639-b1ac-ddd1c038d416/puxilesiziwog.pdf
    • http://jesababa.pbworks.com/w/file/fetch/144425715/dolarofawimemazojavujodub.pdf
    • http://zegugas.pbworks.com/f/46383130459.pdf
    • http://poxanoralanu.pbworks.com/f/ap_yaynlar_11.snf_fizik_1._fasikl_indir.pdf
    • http://wijozuzapusa.pbworks.com/w/file/fetch/144437046/beyblade_burst_turbo_episodes_watch_online.pdf
    • http://zufumegi.pbworks.com/w/file/fetch/144423579/dufetukakusej.pdf
    • https://uploads.strikinglycdn.com/files/693bb8b4-0a1b-42a6-a56b-56a1c96d74e9/lucent_english_grammar_full_book_free_download.pdf
    • http://veweran.pbworks.com/f/how_much_should_a_miniature_dachshund_weigh_at_6_months.pdf
    • http://funinupun.pbworks.com/f/93178675896.pdf
    • http://xoxafepapesu.pbworks.com/f/vaneminemanerexolizubi.pdf
    • https://uploads.strikinglycdn.com/files/0511b065-40d2-41a3-9bc9-8b59da7734cd/your_name_full_movie_english_facebook.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_off0000f500.bin
c78ca43d956987ac358b8d05323ac266374d2e937fe40fa1072b555fb656c96f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF500 5140 bytes
font_01_sfnt_off00010672.bin
a3c90e5ee7e114265f168624c9f1423b693eb4f739a7d9f9238e831fc9f106ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10672 11036 bytes

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