PDF malware analysis — malicious · fdcadd256221deea

MALICIOUS

PDF

34.8 KB Created: 2021-07-08 16:32:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24

MD5: 4ce14d57832786dafcd66d01243576c2 SHA-1: 3efa3089436f3ec93bb1de1d0c2d7a348de22c04 SHA-256: fdcadd256221deea3f248504c90eb51fdd900aae35322261689519d5f02ab783

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free spins'. The primary lure URL is http://netcdn.tw/app/406889139/apk-hack-coin-master-game-hack, which is flagged as a known malicious redirector. The document's content and embedded links strongly suggest a social engineering tactic to trick users into downloading potentially malicious applications or visiting further compromised sites.

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.
LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND

Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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/apk-hack-coin-master-game-hack In PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/fly-hacks-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/fbchampion-com_GM406889139.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/roblox-hacker-tycoon-itowngameplay_GM431946152.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/hack-account-of-roblox_GM431946152.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/money-cheats-roblox-cmd_GM431946152.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/free-robux-hack-for-2021-mystic-plays_GM431946152.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/roblox-ninja-head-for-free_GM431946152.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000031d2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31D2	23020 bytes
SHA-256: `b779942ca76767cfad2ffd343d49531bca7fe3f59df18918be336d7dd8868bcd`
`font_01_sfnt_off000065b9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65B9	18180 bytes
SHA-256: `bbc4eac059efcf8bf1e74c2581f3a6bb8c6757dc141f09cf3b32e8008e1b5aa4`

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