Malicious PDF — malware analysis report

Static analysis result for SHA-256 faaead9b8c7f25af…

MALICIOUS

PDF

77.6 KB Created: 2022-05-29 22:53:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 2c2455210e4d6adf2ffa2b6a70633380 SHA-1: 49fdc0d11281dd8a11a3c2beb1cd1b7d335f015f SHA-256: faaead9b8c7f25af42a8ca59cc5c51537a22e7c49c6a244549b68730dfcdd768
104 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment T1071.001 Web Protocols

The file is identified as a malicious PDF by ML classifiers and ClamAV. It contains embedded JavaScript and an external URI pointing to a suspicious URL, likely intended to deliver a payload or phish for credentials. The presence of embedded JavaScript suggests an attempt to execute malicious code upon opening the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://ragaz.co.za/YmrXLWy8?keyword=osrs%20barrows%20guide%20low%20level%20guide%20osrs%20quest%20guide
    • https://keiba-like.biz/js/ckfinder/userfiles/files/nuneli.pdf
    • http://brackenpaving.com/files/nopakawefadaketitiwogir.pdf
    • https://vujanakisa.weebly.com/uploads/1/3/4/4/134401771/gozolekimetobadamop.pdf
    • http://xn--krmer-dnnebacke-1kb72b.de/files/file/jebudaki.pdf
    • http://elitacasa.it/images/file/jovevoluwepogotojewi.pdf
    • http://leylatoprak.com/userfiles/file/ripasidipakinawerax.pdf
    • https://rapovesotupoma.weebly.com/uploads/1/3/4/3/134353038/semuvepetunorixebon.pdf
    • http://www.deopendeur.org/imgUser/file/zabavofebaxijupaka.pdf
    • http://gioiacompany.net/images/upload/file/bewewatij.pdf
    • http://xn--ob0bjxt9h99icicrvkksa421cwwp7hiv4d6a.net/ckfinder/userfiles/files/54017897582.pdf
    • https://callmarkinvestments.com/callmark/files/46446754247.pdf
    • https://jesepivop.weebly.com/uploads/1/3/1/4/131483445/borimesuwab-bajesubakuv.pdf
    • http://duda-tech.pl/dudatech/upload/file/79053474519.pdf
    • http://fixafilm.se/userfiles/file/fomeki.pdf
    • https://xebuvimujutil.weebly.com/uploads/1/3/6/0/136050287/ea77037baf43940.pdf
    • https://dubitofux.weebly.com/uploads/1/3/4/4/134458445/a4d8539427cd2e4.pdf
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/djkubt7u406hbkp9pa3lh0vfg5/rolituvevixuwegevivun.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca16.bin
7372beb9c4e1726904cbc742fbf3ffade473b1583f19aca5518bc7ee81a4d354
pdf-font-stream PDF embedded font (sfnt) at offset 0xCA16 10884 bytes
font_01_sfnt_off0000e2f7.bin
0fe6eb7dad2c082023b8d6830f98109c2ea9f3ca04e293563e91252a53781f9b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F7 16900 bytes
font_02_sfnt_off00010f27.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10F27 16792 bytes