PDF malware analysis — malicious · d7b50cb808219fe2

MALICIOUS

PDF

46.3 KB Created: 2021-05-11 21:01:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 7dbc4c81045e51b1e052e38f66088e1a SHA-1: a9851b8b8cb251c39dc5d289021bd451e5832944 SHA-256: d7b50cb808219fe2e77ba904ac8e5398bcecd52a8e032df6564551d199990d5b

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for free Robux and game hacks, directing users to a malicious URL. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and content strongly suggest a phishing or scam attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.8696

Heuristics 4

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-com-roblox-game-hack PDF link annotation
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-co_GM431946152.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/minecraft-hack-ios_GM479516143.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-mobile_GM431946152.pdfIn PDF document text
- https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/roblox-free-printables_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_off00004c27.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C27	26416 bytes
SHA-256: `5e07e74f7d0370b566dc1e2bdba8d0325bfbb6eecba85bdeb2576b48b25a6ca0`
`font_01_sfnt_off00008876.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8876	2896 bytes
SHA-256: `0f10adbf105d053971010bc1f17c4dd55814d599674c84f75a6eb4cb46a9c89b`
`font_02_sfnt_off0000926c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x926C	18348 bytes
SHA-256: `0a91f6cfdfc59c313b80ddaaf1db47d93b267e297f9a4be9f2abca10b90eba79`

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