PDF malware analysis — malicious · 526d44023e56c0f3

MALICIOUS

PDF

36.8 KB Created: 2021-05-22 06:08:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 7e6d7210213ed6f52c1728cf6c95bae7 SHA-1: 0654008c7aac63e4ced06be72235ec2729d72b07 SHA-256: 526d44023e56c0f315793b7f2d22aad31a09f66dacecb1f1cf280b12aa620122

208 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains multiple embedded links and a call-to-action phrase, luring the user with 'Free Minecraft Codes' and 'game hack' themes. The document instructs the user to press Win+R or paste a command, indicating a social engineering tactic to bypass security measures. The primary malicious URL identified is https://netcdn.xyz/app/479516143/free-minecraft-codes-game-hack, which is flagged as a known malicious redirector.

Machine Learning

Nyx PDF Classifier malicious score 0.9447

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.
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
Fake invoice / payment lure low SE_INVOICE_LURE

Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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/free-minecraft-codes-game-hack In PDF document text
- http://s-punkt-objects.de/images/minecraft-items_GM479516143.pdfIn PDF document text
- http://s-punkt-objects.de/images/minecraft-free-demo_GM479516143.pdfIn PDF document text
- http://s-punkt-objects.de/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
- http://s-punkt-objects.de/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- http://s-punkt-objects.de/images/pokemon-go-free-and-nintendo-switch_GM1094591345.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_002_off00003694.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3694	25072 bytes
SHA-256: `25fb04e95049bf17533188827f604d506895762b9181fdc00b5e64836d72de36`
`font_01_sfnt_off00006fef.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FEF	17884 bytes
SHA-256: `ca0982e5699fcbbad1c272e9f6df792bd17b0fef580afa6f1747d77cedc77eee`

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