PDF malware analysis — malicious · 1a19665c43b55950

MALICIOUS

PDF

37.4 KB Created: 2021-05-24 07:44:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11

MD5: 5acbf6a6da7a012c92d306085f3a8b49 SHA-1: f416a72d8021ab00fb4ea0d9fbede5361cc8de13 SHA-256: 1a19665c43b55950df9a1673ea803bd65786034ad5218c73b43ab2d437cf6262

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors, disguised as "game hacks" or "generators". The document body explicitly instructs the user to "CLICK HERE TO ACCESS MINECRAFT GENERATOR", and heuristics indicate this is a social engineering attack designed to trick users into executing commands or visiting malicious sites. The primary malicious URL identified is https://netcdn.xyz/app/479516143/how-to-hack-minecraft-game-hack.

Machine Learning

Nyx PDF Classifier malicious score 0.9447

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.
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/how-to-hack-minecraft-game-hack In PDF document text
- https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
- https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
- https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
- https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/roblox-executor-free_GM431946152.pdfIn PDF document text
- https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links-2021_GM406889139.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_off00003886.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3886	24980 bytes
SHA-256: `8c58ad51a7e3fcfd67e22fc50c7bf3dca10c8d6018513a6ba72b421d7fb6634e`
`font_01_sfnt_off000071af.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x71AF	18044 bytes
SHA-256: `ee12250b32ae9257b8264adf9c9bd9c6b89cbb94dc70a51b2b21ac09721525f2`

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