PDF malware analysis — malicious · c4d71d5bac433b64

MALICIOUS

PDF

55.3 KB Created: 2021-05-11 22:22:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31

MD5: a2dcc5f6b8e3fdb3088eaab7d8cd6d16 SHA-1: b996d51626045addd8b14c6a20c34c5d2e730a14 SHA-256: c4d71d5bac433b64419b515e7ba567c7d58f281411e9e4b09b9e86cd93eb2532

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to redirect users to malicious infrastructure, masquerading as game-related content. The primary URL, https://netcdn.xyz/app/406889139/coin-master-free-spins-deutsch-download-ios-link-game-hack, is identified as a malicious redirector. The document's structure and embedded links strongly suggest a phishing or scam attempt to drive traffic to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.8531

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/coin-master-free-spins-deutsch-download-ios-link-game-hack In PDF document text
- https://fordogtrainers.mx:443/images/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/cpbildco-robux_GM431946152.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/coin-master-coins_GM406889139.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/free-robux-place_GM431946152.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
- https://fordogtrainers.mx:443/images/minecraft-server-hacks_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004bc3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4BC3	25560 bytes
SHA-256: `d7e61f9c1c78d8d352d48259a812f5d1ca6fa00d56326095f4fcef1a2e507474`
`font_01_sfnt_off0000877e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x877E	3088 bytes
SHA-256: `e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222`
`font_02_sfnt_off00009249.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9249	7960 bytes
SHA-256: `cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2`
`font_03_sfnt_off0000a56e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA56E	18944 bytes
SHA-256: `8404235b8cfd74d6d6f1010ca69935ae214dcf577c73904f30617ca7dbf1d164`
`font_04_sfnt_off0000c946.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC946	4272 bytes
SHA-256: `fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0`

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