PDF malware analysis — malicious · 2f4537a1bcc055c9

MALICIOUS

PDF

40.2 KB Created: 2021-05-20 20:38:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: e231d921f35c97036d4e8be63916e74d SHA-1: 0dec8771734836f52fe53a3ed99ad89ccf4e62a5 SHA-256: 2f4537a1bcc055c9f07a22638396fa3bea145a82fc8a30cd27850c13a09a9f17

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links and a visual download button lure, directing users to a known malicious redirector infrastructure. The primary link, 'https://netcdn.xyz/app/479516143/hacker-minecraft-song-game-hack', is associated with 'free generator / game hack' lures, indicating a social engineering tactic to entice clicks. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious content or downloads.

Machine Learning

Nyx PDF Classifier malicious score 0.8010

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.xyz/app/479516143/hacker-minecraft-song-game-hack In PDF document text
- https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
- https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
- https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
- https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/how-do-i-get-free-spins-on-coin-master_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_002_off000034c4.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x34C4	30544 bytes
SHA-256: `5e25b8e9f92b3ce16f12604fbb1de3fb0c6f05ed2a9658a3885b5cbfd06666c8`
`font_01_sfnt_off00007214.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7214	2912 bytes
SHA-256: `02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f`
`font_02_sfnt_off00007c11.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C11	18168 bytes
SHA-256: `37e3c409e679a213a10e0592b8ff177cf348fa9834d19b03b17241e7ed0c948b`

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