PDF malware analysis — malicious · 7f243e291ebd5a98

MALICIOUS

PDF

52.9 KB Created: 2021-05-14 15:20:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12

MD5: 9d1a9600d8e801c15c048c503b389a62 SHA-1: a72950f8e475bcb91f2e52bd7bce6da08f034808 SHA-256: 7f243e291ebd5a98e0b2fa76a2ac1b744ad40742bd6ee818c00a7c2fe84ce567

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, disguised as "game hacks" or "free generators". The document body and heuristics indicate a lure to trick users into clicking these links, potentially leading to further malicious downloads or exploitation. The presence of a clipboard command lure suggests an attempt to trick the user into executing commands, possibly to download and run a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.8787

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 https://netcdn.xyz/app/479516143/minecraft-free-no-virus-game-hack In PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-online-hack_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/robux-codes_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/i-want-robux_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-free_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/what-is-coin-master_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
- https://www.youtIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004cbc.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CBC	25304 bytes
SHA-256: `b6a58d3d263704213ee015ff6066ddc9a2a0af6cbccde282c5eb5b792591863f`
`font_01_sfnt_off000085b6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85B6	7936 bytes
SHA-256: `218d53b68bdddb064f6fba4be822d5b3725ed1cef1a3b42796a8dd99c4a62f4e`
`font_02_sfnt_off00009edf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9EDF	4232 bytes
SHA-256: `ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5`
`font_03_sfnt_off0000ad6b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAD6B	17984 bytes
SHA-256: `dc1070e55d23b1f9b68bc4df5483709f88991ded958cde4b28c75d043bb6694a`

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