PDF malware analysis — malicious · 82664c83a0ad650c

MALICIOUS

PDF

35.5 KB Created: 2021-07-10 02:30:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 5ca1236d203537a0b62d51bc237048a2 SHA-1: 084023ff6a4900c201b4d8ce939521fe0301ad56 SHA-256: 82664c83a0ad650ca32222038ab15dfc3ae8203cc619757bfb2fd49ccd7c37d8

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document is designed to lure users into clicking links related to game hacks and free currency. It contains numerous links to external PDFs and a primary redirector URL, http://netcdn.tw/app/431946152/how-to-get-free-robux-hack-game-hack, which is flagged as malicious. The document's structure and content strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-get-free-robux-hack-game-hack In PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-blue-hair-roblox_GM431946152.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/roblox-phantom-forces-aimbot-hack-download_GM431946152.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-coin-master-glitches_GM406889139.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/rblx-gg-free-robux-today_GM431946152.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/coin-drop-master-free_GM406889139.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/how-do-you-hack-phantom-forces-on-roblox_GM431946152.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/roblox-cheat-shinobi_GM431946152.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/oginject-co_GM406889139.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-roblox-giveaway-accounts_GM431946152.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/hack-roblox-admin-dl_GM431946152.pdfIn PDF document text
- https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-hack_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_off00003601.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3601	21640 bytes
SHA-256: `5586cd8537b7870dae429f582628ed81472877588487901633680d9310a58933`
`font_01_sfnt_off00006545.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6545	19152 bytes
SHA-256: `a9bff55de90b7722e0be476df1c7a65da1171d9638b3b21a902752e59eae7e63`

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