PDF malware analysis — malicious · 0a3027c3a3cf4790

MALICIOUS

PDF

35.6 KB Created: 2021-06-27 05:56:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: b3f75713e110b792912612ea045ed1ee SHA-1: 25a08fd67564f6eba85fcf42426a86e23c16cb9e SHA-256: 0a3027c3a3cf479026e6218f3890fdb34297ab15fa98fc5e130d2e3daa54c157

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to known malicious redirectors and websites offering 'free generators' or 'game hacks', which is a common lure for phishing or malware distribution. The presence of a visual download button further supports the malicious intent of directing users to potentially harmful content. No scripts were extracted, but the document's structure and embedded URLs strongly suggest it's part of a phishing or social engineering campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

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.
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.co/app/431946152/easy-robux-hack-no-human-verification-game-hack In PDF document text
- https://nhaphangjapan.vn/public/upload/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/roblox-prison-life-hacking-sex_GM431946152.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/how-to-get-free-faces-with-no-robux_GM431946152.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/how-to-get-games-that-cost-money-for-free-roblox_GM431946152.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/free-pe_GM479516143.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/can-you-use-cheat-engine-in-2021-roblox_GM431946152.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/hacks-tools-roblox_GM431946152.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/admin-hack-roblox-exploit_GM431946152.pdfIn PDF document text
- https://nhaphangjapan.vn/public/upload/files/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
- https://www.roblox.com/.IIn 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_off000032a5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32A5	22412 bytes
SHA-256: `6d692f687a58ac0f4b437084b1c8ba024a02b63ef65ceacaa9c9837386790726`
`font_01_sfnt_off00006487.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6487	19520 bytes
SHA-256: `366ecb650adc55fe3c67369d1a0b22a7ea9b63543d55c4e13c9737386bb24d30`

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