PDF malware analysis — malicious · a4a9fefec4416871

MALICIOUS

PDF

53.9 KB Created: 2021-06-03 07:01:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22

MD5: f0ccbcc5652a7bebb0e826de69dc9c78 SHA-1: 15b792bde0588dad9761895b5826683ce641e1be SHA-256: a4a9fefec4416871986b29605afdd21d5920cd62452d35b76481db3d4bb6cbe8

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristic firings indicate a lure related to game hacks and free generators, designed to entice users to click these malicious links. The presence of embedded URLs and the nature of the lures suggest an attempt to direct users to potentially harmful content or phishing sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9636

Heuristics 4

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.
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/431946152/how-to-hack-into-someones-roblox-account-game-hack In PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-gift-link_GM406889139.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-robux-legit_GM431946152.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/cheats-coin-master-free_GM406889139.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/village-coin_GM406889139.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-robux-co_GM431946152.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
- http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-fan-page-facebook_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_off0000557b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x557B	34224 bytes
SHA-256: `b34a27f3bad8f5cafdc155fd7a71ccca7f6a8d2f8b0b5dd78b8befab9f36f42e`
`font_01_sfnt_off00009fe5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9FE5	6100 bytes
SHA-256: `f866077ce59d6ea276f75e4af76daa2aab5f3a1a679df144776123d85664d65c`
`font_02_sfnt_off0000ae71.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAE71	18852 bytes
SHA-256: `e61c608513e4255ab8492ebba14a14bba84c9cdf9fdbd64ed05887b932178c19`

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