Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf63b9e7ed32e504…

MALICIOUS

PDF

112.5 KB Created: 2021-03-25 16:54:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fab872ba1df842b31dca48cc2c48757d SHA-1: da4f127e693351656cb3221c3603433aee5d86ee SHA-256: bf63b9e7ed32e5043a9e630bac42d231294df1e6a7d752802897d14fb4523927
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest this PDF is designed to trick users into visiting a malicious site, likely as part of a phishing campaign.

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://xezojetit.ru/strik?utm_term=oster+steamer+instructions+5712
    • http://nawitebexu.medianewsonline.com/8659734756.pdf
    • http://zokidinodajives.getenjoyment.net/51966815365.pdf
    • https://cdn-cms.f-static.net/uploads/4369520/normal_602f91619608a.pdf
    • http://duwudivusupo.mygamesonline.org/44560611698.pdf
    • http://rajuxotuxux.22web.org/67570361766.pdf
    • https://static.s123-cdn-static.com/uploads/4474752/normal_5fef3f0586119.pdf
    • http://dosefokinuvulo.mypressonline.com/91541570128.pdf
    • http://konovulibugu.iblogger.org/88774390022.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://181f3bdf-810f-4c34-abb3-9f3362228cd6.filesusr.com/ugd/30415f_abfb7201fcde4a07ab90c442c7b84bcd.pdf?index=true
    • https://86a9da1b-0b57-4b35-a77a-523886b904cd.filesusr.com/ugd/0d9a50_5ded952aab5a4eeeaa1845d79440af8c.pdf?index=true
    • https://7e8267f5-6380-480e-ad72-df526eaefc07.filesusr.com/ugd/cbe325_9df1d7a16775413e83492ffebedb6e78.pdf?index=true
    • http://jefelaxe.epizy.com/cg_holi_song_dj_2019.pdf
    • https://abbf68a8-5b21-4996-91be-11266bd273ed.filesusr.com/ugd/9374a7_fd474468a4a0407bba66d5c3f2992796.pdf?index=true
    • http://mosiwifu.epizy.com/71852811170.pdf
    • http://tezuzatarezoz.epizy.com/94417004824.pdf
    • https://70848fb0-0fd0-490a-9360-2ffa38fc212c.filesusr.com/ugd/08e331_72cbc0b7539146ea99d465e5bc3f27cd.pdf?index=true
    • http://jebejabekuja.epizy.com/away_in_a_manger_chords_g.pdf
    • http://vanofasara.epizy.com/river_flows_in_you_piano_tutorial_easy_with_notes.pdf
    • http://lovamavip.epizy.com/15618103675.pdf
    • https://d2ea4bfc-f92a-4379-acf2-d9b69981ddb7.filesusr.com/ugd/739437_c5c4e414e2fc40c3a06cefef6c7c7cd4.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_off000174f4.bin
d41201dfd2b905463e69b734365b82961725c9b1391dd9abb063828a02edcce1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x174F4 5328 bytes
font_01_sfnt_off0001870b.bin
84d6e1f91c2282cac157fc50d8ecea2e7c8684cb400e346930cd65c4f3fe6aee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1870B 14124 bytes

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