Malicious PDF — malware analysis report

Static analysis result for SHA-256 f716cacb9788a0d8…

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 05:03:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 21986acbfcc93684bff99bc59d0be3c7 SHA-1: ac955638e33d3a85cc8b2b3b6fb215308600760c SHA-256: f716cacb9788a0d82b5930816161408399a48dbf66d4e5e1dc6f694258d2d193
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector infrastructure, disguised as a 'game hack' or 'generator' lure. The primary malicious URL identified is https://netcdn.xyz/app/479516143/how-to-make-a-minecraft-server-for-free-java-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate malicious redirection and potential further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/how-to-make-a-minecraft-server-for-free-java-game-hack In PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/code-free-robux_GM431946152.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sfh.minurispenjaringan.sch.id/__statics/gudangsoal/files/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d0e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D0E 25000 bytes
SHA-256: c8614f230877f8b3d1e7d3280f27ba07c4866c7c973ba4332474ad98198f1fd1
font_01_sfnt_off0000850b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x850B 18324 bytes
SHA-256: 8b4800acb7384bcfa67487ca78fa1370069e5af6aca7e30b38108085ab0232c0

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