PDF malware analysis — malicious · 4e7f9c19e9302433

MALICIOUS

PDF

53.5 KB Created: 2021-05-11 18:07:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 5224458bb3a0bf4600b3150f933b8632 SHA-1: fc52fc5cddb924b22413389b2a6481af08c60cb9 SHA-256: 4e7f9c19e9302433b8bcabdf2965b939ef45fe1a3ec7fcc26f0d1670aae87984

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering "free Robux" and "game hacks", which are common lures for phishing and malware distribution. One of the primary links, https://netcdn.xyz/app/431946152/free-robux-no-human-verification-no-survey-game-hack, is identified as a malicious redirector. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious infrastructure, likely for further payload delivery or credential harvesting.

Machine Learning

Nyx PDF Classifier malicious score 0.9017

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 https://netcdn.xyz/app/431946152/free-robux-no-human-verification-no-survey-game-hack In PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/oprewards-com-earn_GM431946152.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/add-robux_GM431946152.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/fake-robux-codes_GM431946152.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/minecraft-hack-app_GM479516143.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/best-hacked-client_GM479516143.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://elearning.manesa.sch.id/__statics/gudangsoal/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn 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_off00004cf8.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CF8	29456 bytes
SHA-256: `5c901c1f01f659424e48cc72de8508ceceb978eaea2839908732b0b4a2ded9b0`
`font_01_sfnt_off0000918e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x918E	4008 bytes
SHA-256: `515da38a799acdefd039af3a0dfb6ec4815b572058c9bd492ec5a77cd7658593`
`font_02_sfnt_off00009f15.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F15	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_03_sfnt_off0000ac27.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAC27	19156 bytes
SHA-256: `339d1e55aee7c6169fc9e26e1541ea9d6c779f781f53a8c1d652dbe4fbeac478`

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