PDF malware analysis — malicious · 3070d16f71c8662b

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 19:14:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25

MD5: 6ad80a15984375cfae2bccf7419f11a0 SHA-1: ce26bd8363b8e5c19ce011e4899387f1cffa6e39 SHA-256: 3070d16f71c8662b9381aedb8308a728796b95ca4f9304c80c030ece6c806d09

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users into downloading potentially malicious applications or visiting SEO link farms. The primary redirector URL, http://netcdn.tw/app/406889139/coin-master-free-spons-apk-2021-game-hack, is associated with game hack lures. The document also contains a large number of links to PDF files hosted on elearning.mtsalmanar.com, suggesting a link farm for SEO manipulation.

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/406889139/coin-master-free-spons-apk-2021-game-hack In PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/pokemon-go-free-legendary_GM1094591345.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/robux-free-com_GM431946152.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/free-account-whit-credit-balance-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://elearning.mtsalmanar.com/__statics/gudangsoal/files/coin-master-free-spins-generator_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_off00002ffd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FFD	22240 bytes
SHA-256: `d033c42eb849451e4dbaf9db3ce43367aa33a735c5376b6e76c68c0a189a857b`
`font_01_sfnt_off00006173.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6173	18748 bytes
SHA-256: `5e77ef61f71b9edceb1db79b59856649b40968d05cf737e8f2ff8c48d385844d`

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