PDF malware analysis — malicious · 03489f48ede7d7af

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 11:45:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 3b6e2a09bbda772851c9b6747ef17ce9 SHA-1: 1ae3d74ce7ea5f969b193c1e1f2a81e719888a83 SHA-256: 03489f48ede7d7af786370c7792181793806f31b8ddf2bf402a29f10a033be73

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure. The document body and heuristics indicate a lure for game-related hacks and free items, designed to drive traffic to SEO link farms and potentially malicious sites. The primary malicious URL identified is http://netcdn.tw/app/406889139/how-to-block-someone-on-coin-master-game-hack.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/how-to-block-someone-on-coin-master-game-hack In PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-admin-hack-download-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-roblox-hacks-phantom-forces_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/arcane-legacy-hack-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/roblox-mining-simulator-hack-script_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/bit-slicer-roblox-all-hacks_GM431946152.pdfIn PDF document text
- https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-exchange-40-free-spins_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_off0000331d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x331D	23044 bytes
SHA-256: `02331fb3fd48fdc3ca47200c5d52236fc2bb118dafce2c8b25afba74970110d4`
`font_01_sfnt_off000066c9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66C9	18716 bytes
SHA-256: `dc2aca6796f2c3277543009f3b518ac3286807ed27c41d74326e2a2879575f3b`

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