PDF malware analysis — malicious · fcb54ce06f8ad1d9

MALICIOUS

PDF

47.1 KB Created: 2021-06-03 09:47:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11

MD5: a78d7c26522b474df1cf5d8e98409eac SHA-1: d9ab45e6bb79bc4d3b641a62b07e1496a00bc93f SHA-256: fcb54ce06f8ad1d95d18f3da05c3ee09c6c9169cb46327220f91078c8fde1c57

240 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to external websites, many of which are related to game hacks and free in-game currency, indicating a lure for users interested in such topics. The presence of a malicious redirector URL and a high ML classifier score further support its malicious nature. The document's structure and embedded links suggest it's designed to drive traffic to potentially malicious or scam-related sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

Heuristics 6

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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 https://netcdn.online/app/406889139/http-bit-ly-coin-master-hack-game-hack In PDF document text
- http://pustaka-smpn3tpi.com//repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
- http://pustaka-smpn3tpi.com//repository/free-roblox-website_GM431946152.pdfIn PDF document text
- http://pustaka-smpn3tpi.com/repository/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
- http://pustaka-smpn3tpi.com//repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- http://pustaka-smpn3tpi.com//repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- http://pustaka-smpn3tpi.com//repository/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
- http://pustaka-smpn3tpi.com/repository/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
- http://pustaka-smpn3tpi.com/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
- http://pustaka-smpn3tpi.com/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
- http://pustaka-smpn3tpi.com/repository/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
- http://pustaka-smpn3tpi.com/repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://pustaka-smpn3tpi.com/repository/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
- http://pustaka-smpn3tpi.com/repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://pustaka-smpn3tpi.com//repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
- http://pustaka-smpn3tpi.com//repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- http://pustaka-smpn3tpi.com/repository/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
- http://pustaka-smpn3tpi.com//repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
- http://pustaka-smpn3tpi.com//repository/coin-master-hack-apk-july-2021_GM406889139.pdfIn PDF document text
- http://pustaka-smpn3tpi.com/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- http://pustaka-smpn3tpi.com/repository/free-spin-and-coin-blogspot-com_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_004_off00004fbf.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FBF	26328 bytes
SHA-256: `f1666539870522d6de867769c2ab644a5d4041a878881eb6efb28afecc864923`
`font_01_sfnt_off00008b6d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B6D	2880 bytes
SHA-256: `b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e`
`font_02_sfnt_off00009558.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9558	18288 bytes
SHA-256: `5fbed04530fd5233e85522bcf95dabe2bab0495a9adc2bbbbcde83bb79acff30`

Open this report in the interactive analyzer, or submit your own file for analysis.