PDF malware analysis — malicious · b5fde2a4619a689e

MALICIOUS

PDF

44.6 KB Created: 2021-05-16 16:05:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22

MD5: 3d2faa1f809517c15f7ece06cc12acb8 SHA-1: 5c0be988fdcc49074298d81807a641e1094efe44 SHA-256: b5fde2a4619a689e4f8a7f76d8386c0ff0b0d74fc6423dc057c629ab5114b831

240 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs social engineering tactics, specifically a 'ClickFix' lure, to trick users into executing commands. It presents a fake offer for game-related items and directs users to click links that lead to malicious redirectors. The document body, though partially garbled, contains references to game hacks and generators, reinforcing the lure. The primary malicious URL identified is https://netcdn.xyz/app/479516143/minecraft-bedrock-for-free-game-hack.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 6

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.
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
ClickFix social engineering attack high SE_CLICKFIX

Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
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/minecraft-bedrock-for-free-game-hack In PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/robux-prices_GM431946152.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-home_GM406889139.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/game-hunters-coin-master_GM406889139.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/free-robux-generator_GM431946152.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/free-robux-site_GM431946152.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-spin-link_GM406889139.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/free-robux-quiz_GM431946152.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-homepage_GM406889139.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/earn-free-robux_GM431946152.pdfIn PDF document text
- https://hunting.beta.privatewaterfishing.com/userFiles/files/how-can-i-get-robux_GM431946152.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
`stream_003_off00005184.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5184	25580 bytes
SHA-256: `62b2d19f21c35c02f3a68f7bf79aaa6e668829494f1b5883a8ec0f7954bedfee`
`font_01_sfnt_off00008c2d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C2D	18268 bytes
SHA-256: `421dc37018d5e6f1467ffbccbacebf5894202cb157ac672e86022266516fa266`

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