Malicious PDF — malware analysis report

Static analysis result for SHA-256 59f2d42bfe49bdef…

MALICIOUS

PDF

46.3 KB Created: 2021-05-11 15:00:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5e45486d85f85e55de9eb4070c59cbe5 SHA-1: cdbd4f6c1b8b1722606485285434aec1eb648b80 SHA-256: 59f2d42bfe49bdef65114ab0d8d2db689615607eabb38832d2e3f8f5e86905ae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary redirector URL is https://netcdn.xyz/app/431946152/free-robux-gift-card-generator-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9278

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.xyz/app/431946152/free-robux-gift-card-generator-game-hack In PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-coins-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-coins-and-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ac8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AC8 24644 bytes
SHA-256: 1965c2963a61e1482b3fd9e83a121562d8441f56cd8ce99535b5e88bcf19a4b5
font_01_sfnt_off000083a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A1 4008 bytes
SHA-256: 515da38a799acdefd039af3a0dfb6ec4815b572058c9bd492ec5a77cd7658593
font_02_sfnt_off0000912d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x912D 18640 bytes
SHA-256: 9c31dcaac4a0b50b5f0fc2170f059f54bc5506f6c6606d446db32e5f0aacf3a6