PDF malware analysis — malicious · 51e83d6d86391978

MALICIOUS

PDF

35.6 KB Created: 2021-07-06 07:54:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 264d729a00f9de20f50bf028b49b137b SHA-1: 993f8a0cdc42709b32e488a8e388d56b4cd0bc0b SHA-256: 51e83d6d86391978766350f75ae113ae9a7afefba43083b83dac5fa06f594179

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external sites, including a known malicious redirector at http://netcdn.tw/app/431946152/how-to-get-free-roblox-money-game-hack. The document body and heuristics indicate a lure for game hacks and free currency, designed to trick users into visiting these malicious sites. No scripts were extracted, but the overall pattern suggests a phishing or scam attempt.

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/431946152/how-to-get-free-roblox-money-game-hack In PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/derp-face-roblox-hacked_GM431946152.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/free-roblox-promo-codes-2021-june_GM431946152.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/hack-moccap-dancing-points-roblox_GM431946152.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/jailbreak-free-phone-calls-roblox_GM431946152.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/roblox-money-hack-free_GM431946152.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/mcpe-download_GM479516143.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/how-to-get-free-robux-2021-fast-and-easy_GM431946152.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/free-bc-roblox-android_GM431946152.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/hack-para-roblox-de-robux-2021_GM431946152.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/free-roblox-printables_GM431946152.pdfIn PDF document text
- https://elearningaliyah.almubarakddi.org/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins_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
`font_00_sfnt_off000032e0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32E0	22560 bytes
SHA-256: `8ab33a7028d24803e0182d5c733844880c3fe623788e757ac6e21a724e869db8`
`font_01_sfnt_off00006564.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6564	19296 bytes
SHA-256: `62e2d478c3b8ba984cb5c2b5fd6287141d7fbbdf36fee583ba60af1fa784e302`

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