PDF malware analysis — malicious · 8f1776224e606b57

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 17:36:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22

MD5: bc01480d17fc21bbb58d9144eae899c2 SHA-1: e2f8ae51fe5cf504e6dfeb3532685d3651fd587e SHA-256: 8f1776224e606b57d953225b5bbef61ae3d1532b08350aa8fc726a2b510f9d2d

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to redirector domains, specifically advertising 'free generator / game hack' lures for popular games. The primary malicious URL identified is http://netcdn.tw/app/406889139/coin-master-free-spins-link-today-facebook-game-hack, which is flagged as a known malicious redirector. The document body and heuristics confirm the intent to lure users to external sites, likely for further exploitation or malware delivery.

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-link-today-facebook-game-hack In PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/roblox-btools-script-hack-sitev3rmillionnet_GM431946152.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/free-robux-now_GM431946152.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/free-robux-website_GM431946152.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/roblox-people-girl_GM431946152.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/copy-and-paste-free-robux-items_GM431946152.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/ways-to-earn-robux_GM431946152.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/how-to-hack-a-roblox-accounts-2021-on-pc_GM431946152.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
- http://elearning.mysadam.info/__statics/gudangsoal/files/get-free-tiktok-fans_GM835599320.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/how-to-script-hack-on-roblox-lumber-tycoon-2-money_GM431946152.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
- http://www.elearning.mysadam.info/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey_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
`stream_002_off00002fb2.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2FB2	22856 bytes
SHA-256: `f39fc401632e34a3650bfe6b8d6569487e040c89c337a5f32c5fcd86bf0c8fc8`
`font_01_sfnt_off0000631c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x631C	18856 bytes
SHA-256: `c3ade08de57381628f5686ccf696f3ba3849ebe8fe4747e995ca261a5a4133ad`

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