PDF malware analysis — malicious · 89049a58f70da8cf

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 11:33:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 6cc4d232fcf86bf5ed75106a56ed7df4 SHA-1: 4ea2c593eef39132f2b28cbbd294f15d36edea7b SHA-256: 89049a58f70da8cfeaaf3950fd0a30cea11685885d1ca93da720dbce276fe4ea

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external resources, including a known malicious redirector at http://netcdn.tw/app/431946152/free-robux-card-codes-game-hack. The document body and heuristics indicate a lure related to free game currency or hacks, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the presence of multiple links to potentially malicious sites and the 'free generator' lure strongly indicate a malicious intent.

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/free-robux-card-codes-game-hack In PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-with-command-promp_GM431946152.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/roblox-free-exploits_GM431946152.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/no-robux_GM431946152.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/free-robux-no-bot-verification_GM431946152.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/earn-free-robux_GM431946152.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
- https://ekbm.mankotapasuruan.sch.id/__statics/gudangsoal/files/instant-robux_GM431946152.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_off00003205.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3205	22584 bytes
SHA-256: `aff0a29322ad5ef123bd1261251dfcc67928a08ffa09edf6e28f88dd7f46ee7e`
`font_01_sfnt_off0000646a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x646A	18888 bytes
SHA-256: `6c6de0ceaed5fc014d3dcce92ca1cb896bf7995edf6e50a0e815779b2f83a656`

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