PDF malware analysis — malicious · f98f8db1a2e239a2

MALICIOUS

PDF

47.1 KB Created: 2021-05-14 10:40:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 71a754bbe112e7b52a8f584a9032ed8c SHA-1: df8c7f5c74edf53260dbc212c7327e9eca2042d3 SHA-256: f98f8db1a2e239a25564394cad2778d2a2f5719b756ebc45569deb0b0488a86f

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users into clicking on them by promising free game currency or hacks. The primary link, 'https://netcdn.xyz/app/431946152/free-robux-no-human-verification-generator-game-hack', and the extensive list of other PDF links suggest a link farm or redirector intended to lead users to potentially malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a malicious intent to drive traffic to external sites.

Machine Learning

Nyx PDF Classifier malicious score 0.8948

Heuristics 5

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.
PDF links to a 'free generator / game hack' redirector high 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.
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
External URI info PDF_URI

PDF contains an external URL action
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-generator-game-hack PDF link annotation
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/best-free-coin-master-spins_GM406889139.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/to-get-free-robux_GM431946152.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/roblox-login-hack_GM431946152.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-code-for-free-spins_GM406889139.pdfIn PDF document text
- http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-hack-spins-apk-download_GM406889139.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_off00004c59.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C59	25364 bytes
SHA-256: `9a192f09159659256316f998ab18173d92b85106aa40874678425a48655181bb`
`font_01_sfnt_off00008713.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8713	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off00009425.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9425	18860 bytes
SHA-256: `d7f1bf4664d5c073c741d68610eb5dcf28a8fd63084b2bf56aee4ef09f8af4a0`

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