PDF malware analysis — malicious · b43a8b238bd75c24

MALICIOUS

PDF

32.6 KB Created: 2021-07-21 00:19:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 3f1fdd8c4b55cb7430e9d5bad8906e21 SHA-1: 2abfc8d85e26936154d5913e1666db98f21a5091 SHA-256: b43a8b238bd75c24e3d95015469415d7453d90000f1fcedbe4139b3cf893c985

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them by promising free game hacks or currency. The primary link, http://netcdn.tw/app/479516143/how-to-get-minecraft-for-free-game-hack, is identified as a malicious redirector. The document's content and embedded links suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

Machine Learning

Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/479516143/how-to-get-minecraft-for-free-game-hack In PDF document text
- http://razredna-nastava.net/files/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
- http://razredna-nastava.net/files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
- http://razredna-nastava.net/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://razredna-nastava.net/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
- http://razredna-nastava.net/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
- https://razredna-nastava.net/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
- https://razredna-nastava.net/files/free-tiktok-coins_GM835599320.pdfIn PDF document text
- http://razredna-nastava.net/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
- https://razredna-nastava.net/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://razredna-nastava.net/files/freer-tiktok_GM835599320.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_off00002d6f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D6F	22228 bytes
SHA-256: `841cfccd3612bdf911600c79d2fda16a912f2842b6b8a5a6c3013a9660373d7f`
`font_01_sfnt_off00005e8d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E8D	17872 bytes
SHA-256: `6fa695b9296659f7eb743de2dcac64eb87e125e0d99966acf8bb7a2f268f66d6`

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