Malicious PDF — malware analysis report

Static analysis result for SHA-256 db57c97b4b7cb15a…

MALICIOUS

PDF

38.1 KB Created: 2021-05-23 23:42:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 3a5f19f738c04c9271d19fabc53b12ef SHA-1: 03ddf9ca41cd7271a86e715187e15caf7a9160b5 SHA-256: db57c97b4b7cb15ad9aed883fc4fe8b9cf9042428cb7d0048ec9d71e697eb295
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering 'game hacks' or 'free currency', a common lure for phishing or malware distribution. The document body explicitly mentions 'Roblox Hack' and includes a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR'. The presence of malicious redirector links and the lure of free in-game items strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.xyz/app/431946152/roblox-hack-game-hack In PDF document text
    • https://topkoreamart.com/public/upload/files/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/minecraft-free-play-now_GM479516143.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.

FilenameKindSourceSize
font_00_sfnt_off0000338d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x338D 26572 bytes
SHA-256: 058d72068a5f38bd7caac3d3044e35bdb0ecccecc2dcb60a8d4c681aac994914
font_01_sfnt_off00006f94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F94 19660 bytes
SHA-256: a558e4fd9982fcee1032336013bcfd137c41ab5ae6cc4b02c12d26ae49e490d0

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