PDF malware analysis — malicious · 907083cbe5e97ce2

MALICIOUS

PDF

44.7 KB Created: 2021-06-11 05:01:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 84a9b0e69a22306af12ce5f388fa9dab SHA-1: 13add365ac9c6563e179b6313f9c212043b77e6c SHA-256: 907083cbe5e97ce2154ee2891eafc5e6f5238e9a0771754b1c762aa8c844b5ba

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as 'free generators' or 'game hacks', redirecting users to external sites. One primary URL, https://netcdn.tw/app/431946152/how-to-play-roblox-on-xbox-one-for-free-game-hack, is identified as a malicious redirector. The document body, though partially corrupted, also contains this URL and other links pointing to what appears to be a link farm for game-related cheats and hacks.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/how-to-play-roblox-on-xbox-one-for-free-game-hack In PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/www-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-free-link-app_GM406889139.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-gift-hack_GM406889139.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/free-robux-hack-2021_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_004_off00005272.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5272	24680 bytes
SHA-256: `288a40e9f132385554fea1bf7ecbfa5e1ac93dffd7cd05b1db4b35ac0fb137c5`
`font_01_sfnt_off00008af1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AF1	18672 bytes
SHA-256: `e50fab4d14179ea7b351983d4044caa29098e157ac74f13ae9e76e4993bced5a`

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