Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d1a72d5312553e6…

MALICIOUS

PDF

43.8 KB Created: 2021-05-22 14:17:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 928cdfa60b45ca73446a124b9faa25e5 SHA-1: 39e6a99f1c0232b4f45a7ca8910de4ed26e7278a SHA-256: 3d1a72d5312553e630bdec380d32cf73fb03abd42eb8e88930542cb5ad559bba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors, specifically promoting 'free generators' and 'game hacks' for popular games. The document body and embedded artifacts suggest a lure to a malicious URL, likely for credential harvesting or further malware delivery. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent through embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7947

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/robux-hack-me-game-hack In PDF document text
    • http://www.imperialaccountingfl.com/images/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003331.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3331 24904 bytes
SHA-256: 5da01468f8d2d2b2ef80215842d5fcb8bdc4c707fe15d861f2d616316b770a8e
font_01_sfnt_off00006c61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C61 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00007904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7904 6636 bytes
SHA-256: 62075f0fe13502d46afb6e55e83d440c29ef4988399537df1f86e7653ce3b744
font_03_sfnt_off00008911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8911 18444 bytes
SHA-256: 63c17dbc7d8c7d1de0ff2471750372836806f4a6a54ec4612fcacbe2caf81c31