PDF malware analysis — malicious · 5cd6628b8f05b23b

MALICIOUS

PDF

46.3 KB Created: 2021-06-08 23:15:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: d97a2d4f99399589a5207650fddd97d6 SHA-1: 6afeb44bf1ab148a5dd79bb3e2ca7d09c96f6efb SHA-256: 5cd6628b8f05b23ba0ac6bf806eda225de9323ea423d19f0071db2f1512b5607

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on what appear to be game hacks or free generators. These links redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_GAME_HACK_REDIRECT_LURE heuristics. The document body and embedded links suggest a phishing or scam attempt to drive traffic to potentially harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9832

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.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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.tw/app/431946152/roblox-hack-sites-2021-game-hack In PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/pokemon-go-free-kr-hack_GM1094591345.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/tiktok-for-free-textbooks_GM835599320.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-robux-download_GM431946152.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
- http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://discordIn 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_off000056d7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x56D7	25036 bytes
SHA-256: `3064661159028c5ca2e2d2faaad46a2dbe0662d377d0cbc40667fc6eaed15e30`
`font_01_sfnt_off000090ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x90AD	18808 bytes
SHA-256: `68a56c2502da3225b318bf42b7bdf45e802f1911f41aa18b7e12427a7ef22315`

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