PDF malware analysis — malicious · e64d57d09e62f2f8

MALICIOUS

PDF

46.4 KB Created: 2021-05-12 19:50:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12

MD5: 00ba1cf25299fd2f1520db8225eb881b SHA-1: feaaae9465ca48347e0677dc7b566188f12d6f99 SHA-256: e64d57d09e62f2f88892c45e6c8f04c88ec610cf866930f84a7a60ba28653d70

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains multiple links to redirectors and external PDF files, masquerading as game hacks and generators to entice users. The document body and heuristic firings indicate a lure for potentially malicious downloads, likely involving a second-stage payload. No scripts were extracted from this sample, but the extensive link farm and redirector infrastructure strongly suggest a malicious intent to deliver further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.8948

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 https://netcdn.xyz/app/406889139/download-hacked-games-coin-master-game-hack In PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-hack-uk_GM406889139.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-robux-group_GM431946152.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-robux-cards_GM431946152.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/claim-roblox_GM431946152.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/mcpe-116_GM479516143.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
- https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/earn-free-robux-today_GM431946152.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_003_off00004bf6.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4BF6	26424 bytes
SHA-256: `096cd8ed9abc0d206ae952dafd82d8e1c4b772977def75f7b4238e4069cc61ab`
`font_01_sfnt_off0000888a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x888A	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off0000923c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x923C	18556 bytes
SHA-256: `872856dc36b7d0cde2667ea9daae6868ef6ed6eada75fea978a440faa6a0cafa`

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