PDF malware analysis — malicious · 656ca27fb9b9015b

MALICIOUS

PDF

36.7 KB Created: 2021-07-21 06:37:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: f249defccab6c4323c1b4867fc13a6a5 SHA-1: a473526b6adac5163cf2eefc59324fb5c05a5090 SHA-256: 656ca27fb9b9015bc025621446f9c426984bbcf32cb96d5c2a6f0dd5a9dc8889

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically a lure for 'Free Robux Gift Card Codes'. The document body and heuristics indicate a social engineering tactic to trick users into clicking these links. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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.tw/app/431946152/free-robux-gift-card-codes-game-hack In PDF document text
- https://magistrinfo.ru/images/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
- https://magistrinfo.ru/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://magistrinfo.ru/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
- https://magistrinfo.ru/images/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
- https://magistrinfo.ru/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
- https://magistrinfo.ru/images/freer-pro-tiktok_GM835599320.pdfIn PDF document text
- https://magistrinfo.ru/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- https://magistrinfo.ru/images/minecraft-free-app_GM479516143.pdfIn PDF document text
- https://magistrinfo.ru/images/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
- https://magistrinfo.ru/images/how-you-get-free-robux_GM431946152.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
`stream_002_off000038a6.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x38A6	22880 bytes
SHA-256: `51de3872d287898232c98942464e8d4ac4d23969f1157cac578075568d1b9e9a`
`font_01_sfnt_off00006bd0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6BD0	18828 bytes
SHA-256: `a02e0bad934ff514df71652b6297c781be09827754414920139679bb3853bb9a`

Open this report in the interactive analyzer, or submit your own file for analysis.