Malicious PDF — malware analysis report

Static analysis result for SHA-256 32513337eb49bcd8…

MALICIOUS

PDF

35.1 KB Created: 2021-06-28 05:21:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f78d75a3533fd69e8937eeb1c5a367b2 SHA-1: 6c807197ae88dc289b5b8e00fc9ae3327e327651 SHA-256: 32513337eb49bcd8b3e679a5bf326ca185768b2e6568f8d1980ab6c8c1c31880
200 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free in-game currency. The document body and heuristics indicate a lure to trick users into clicking these links, likely leading to further malware downloads or exploitation. The presence of a clipboard command lure suggests an attempt to trick users into executing commands, potentially to download and run a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.co/app/431946152/hacks-for-roblox-the-labyrinth-game-hack In PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-robux-games_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/roblox-re_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/games-that-give-you-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-robux-rbxnow_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/scp-lockdown-roblox-game-cheats_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/roblox-juwelen-hack-mad-paintball2_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/roblox-playstation-4-free_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/roblox-gas-station-simulator-cheat_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/robux-free-c_GM431946152.pdfIn PDF document text
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-minecraft-coloring-pages_GM479516143.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_off000031c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C3 22312 bytes
SHA-256: 2524a17ae0232b534f818848aa8171d74a71231e32875524a0b633d48c679707
font_01_sfnt_off0000636b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636B 19388 bytes
SHA-256: 7048236b32696342f478918a5bd15974e63eb996cd5cc76b54d0cd85268f9015

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