Malicious PDF — malware analysis report

Static analysis result for SHA-256 aabd3d20de4893df…

MALICIOUS

PDF

38.6 KB Created: 2021-05-22 17:37:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 000c511c1268131e828f887686bc29f8 SHA-1: 83a1a592f307b6641fbc708cbfacdd13fdbc68a7 SHA-256: aabd3d20de4893df9d5f706a2972d7531a11d62bfb4edbeba9f2584ed189b8d6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector, masquerading as game hacks or generators. The document body and heuristics indicate a lure to download further content, likely a second-stage payload. The presence of embedded URLs and the nature of the lures suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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 https://netcdn.xyz/app/431946152/free-robux-2021-game-hack In PDF document text
    • http://anna-art.in.ua/images/free-800-robux_GM431946152.pdfIn PDF document text
    • http://anna-art.in.ua/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://anna-art.in.ua/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://anna-art.in.ua/images/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://anna-art.in.ua/images/coin-master-hack-tool-v1-9-download_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.

FilenameKindSourceSize
stream_002_off00003395.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3395 29316 bytes
SHA-256: 91e8f8f4527c19400f34c320f9dd0effda490f6aeec5c8aafaf9e5239e60eb7e
font_01_sfnt_off00007559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7559 18416 bytes
SHA-256: a2c808792aaeb1607b9c3a91ae122c662faffffe8d42f3cf4118be6ccc5b3e7b

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