PDF malware analysis — malicious · db23387324f3ae6a

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 19:24:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11

MD5: 26a89927a9035f582ea8815d46cfcd75 SHA-1: 34d224020bde49a05c51cb1778934d2cef088b28 SHA-256: db23387324f3ae6ad6d906ce32270d92909fc59e03107868f7f328dc8129f9ae

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and free generators, directing users to a malicious redirector URL. The document contains numerous links to external PDFs hosted on domains associated with SEO link farms, suggesting a campaign to drive traffic to potentially malicious sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

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.online/app/479516143/minecraft-windows-10-hacks-game-hack In PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-robux-script_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-minecraft-accounts-2021_GM479516143.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_004_off000053f0.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x53F0	26364 bytes
SHA-256: `c6e8385d914225ec33cf4672a92633e52be07191ebb8ac8463ab939aefdfe335`
`font_01_sfnt_off00008e03.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E03	18696 bytes
SHA-256: `14f86b407040f424958936cb2b2b49b26067a8980bd50a77917f0563cc1bff87`

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