Malicious PDF — malware analysis report

Static analysis result for SHA-256 934b7cc79d0d87a0…

MALICIOUS

PDF

74.5 KB Created: 2021-06-11 11:41:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ade398401a90f624b19bcc0a529f1629 SHA-1: db64599e93ddc5f00b201828b6c59c220d4e886e SHA-256: 934b7cc79d0d87a0c074f621ac8a46c67649a89cd7505d62410f0acdce99c2c2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs users to a URL associated with downloading music, likely a lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to trick users into downloading a secondary malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://oniceh.ru/uplcv?utm_term=dheeme+dheeme+mp3+download+dj
    • http://braciszewska-klimek.pl/fck_files/file/zurifuketiwemujulazoxura.pdf
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/39a5687ca5fcf8342032a1b5a53fb1f2/tatemip.pdf
    • https://misionesmedellin2030.com/wp-content/plugins/super-forms/uploads/php/files/28tr568ujv8430sufj459elvk8/xajeviba.pdf
    • http://avgdesign.com/userfiles/file/48247621656.pdf
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073857e8cd03---rugusi.pdf
    • http://interwork.sk/userfiles/file/32366069346.pdf
    • https://alakharia.com/public_html/userfiles/file/wixivafi.pdf
    • http://maychamsocda.vn/images/userfiles/file/38852786192.pdf
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/fa220760348c15c2caa17a8092920728/58678444788.pdf
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec3c324c85---37278420776.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080a85c68131---pizujomurebowuxa.pdf
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/160bcb4f58f930---50847223852.pdf
    • https://armagedonspedycja.pl/files/file/5096064258.pdf
    • http://talleresjpg.es/img/file/vafigexodowaresolo.pdf
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/j968bj6f3arosqjo7q4pl2l3jh/majekekopuvuzegipa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbd8.bin
bb12cb8de69d93eebf1eb310cf4b20c180d37b28c9bd9f833dc7a28b345543ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD8 4916 bytes
font_01_sfnt_off0000dc7f.bin
a42965a563f3f54fc17d48905bc8224afed52a693eee61c8af2221bc26e804b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7F 2604 bytes
font_02_sfnt_off0000e7d2.bin
89ef98972d799c267b9e2f9b441073b5fc6df63ebe8457c5c18fce7bd87e3807		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D2 11076 bytes
font_03_sfnt_off00010cfa.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CFA 4324 bytes

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