Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9563dab2800ea50…

MALICIOUS

PDF

35.9 KB Created: 2021-07-04 00:26:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: b96143407743010376abb2839e633e32 SHA-1: 97ac763055ff1d80fb13046747ebd63a4158aef8 SHA-256: d9563dab2800ea500a1145f5a49dcde3adeb2e52bbb15295f2018dd2cd049a89
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a lure for game cheats and free spins, directing users to a known malicious redirector URL. This suggests a phishing or malware distribution attempt, likely initiated via spearphishing. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-spins-cheat-deutsch-game-hack In PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/roblox-cheat-codes-for-gear_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/pubg-uc-zip-file_GM1330123889.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/roblox-top_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/how-you-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/roblox-entrepreneur-tycoon-cheats_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/roblox-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/robux-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/free-robux-on-computer-app_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/robux-come_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pacitan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33F8 23332 bytes
SHA-256: 1c80cf46a71854df57410b43d38bb65b6ffc11af1adf5a48adaba1accd877ffe
font_01_sfnt_off000068c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C1 18648 bytes
SHA-256: 0f75c991103dc95817f01e28baa51d3b59767776a8e5ec3aab022190e4357f66

Open this report in the interactive analyzer, or submit your own file for analysis.