PDF malware analysis — malicious · b1c7958629470f96

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 15:16:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: e9181eeb01fe098460c628a58db5106d SHA-1: 176e8e7c1485cb62484f2bda0a44afc0161a73b6 SHA-256: b1c7958629470f96efa0a7516e5b0f72230f7631545f38f682eb379f4039e551

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/websites-to-get-free-robux-game-hack PDF link annotation
- http://bepquannhu.vn/upload/editor/files/cheat-paintball-roblox_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/roblox-robux-hack-javascript_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/ninja-legend-hack-roblox_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/roblox-free-robux_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/buy-for-free-roblox-builders-club-classic_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/roblox-player-radar-script-hack_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/a-real-roblox-hack_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/how-to-hack-clothes-roblox-2021_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-fire-vs-pubg-tik-tok_GM835599320.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/how-to-make-your-own-roblox-audio-for-free_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-kitty-roblox_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/coin-master-free-online-game_GM406889139.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/how-to-get-free-black-hair-in-roblox_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn 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_off00002f50.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F50	22792 bytes
SHA-256: `1e926ecf553a3cddffb183cf26c56e7f1ea24f4c9741b2dd92356754c159ebf8`
`font_01_sfnt_off0000621c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x621C	19136 bytes
SHA-256: `1ff3ead325db6faa7b931a8562dea2485ede573d321a491f501e33267cef6888`

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