PDF malware analysis — malicious · 5f44792f88f9073d

MALICIOUS

PDF

47.5 KB Created: 2021-05-17 11:04:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: b7b1cde432e2540b0fe767dd0efb8e1d SHA-1: cda5856a57e190140d91a56b8f462b579fcf7811 SHA-256: 5f44792f88f9073d67bb12911fdba410fb180007b573b5392c664bd01730f7a3

168 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, disguised as a lure for free game items. The document body and heuristics indicate a social engineering tactic to entice users to click these links. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-robux-no-gift-card-game-hack, which likely leads to a further stage of compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.9013

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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-gift-card-game-hack In PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/free-roblox-scripts_GM431946152.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/coin-master-hacksco_GM406889139.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/apk-hack-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/make-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/roblox-comcom_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004bcf.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4BCF	26080 bytes
SHA-256: `f516b961daf668e8b6fbb395017b8971e188a087ab5601418a37155ab5cd201e`
`font_01_sfnt_off000088ee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88EE	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off000095ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x95FF	18640 bytes
SHA-256: `5e2a3e67d4e6faa48e47b93c69738121aad1fd6f7e815cfd3538255806571323`

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