Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9ed9e430fd56536…

MALICIOUS

PDF

40.6 KB Created: 2021-05-21 03:13:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 51a63e806ffcec580c790e7360cfe7d2 SHA-1: d53b738147b2ed8d1ec9b2d159be10b080973355 SHA-256: c9ed9e430fd5653673843b1739a550f1688adf1b026869782918cb7e04502150
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that point to known malicious redirectors, specifically advertising "free generators" and "game hacks" for popular games. The ML classifier also flagged the PDF as malicious. The primary lure appears to be a fake generator for Minecraft, directing users to the URL https://netcdn.xyz/app/479516143/minecraft-hacked-client-download-game-hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7776

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/479516143/minecraft-hacked-client-download-game-hack In PDF document text
    • http://suryaartajaya.co.id/images/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://suryaartajaya.co.id/images/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://suryaartajaya.co.id/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://suryaartajaya.co.id/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://suryaartajaya.co.id/images/pokemon-go-free-pokeballs_GM1094591345.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003850.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3850 25624 bytes
SHA-256: c68d88acafcd893343a4a8afbbf405ef8bba616c3f65d14f7da1a86032a36acc
font_01_sfnt_off000072c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C2 2884 bytes
SHA-256: 33fafba5b11d6858d7ba2b4886e0ea5de9791364e56f090dc8583ce319a93e0e
font_02_sfnt_off00007ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA8 18460 bytes
SHA-256: e3089071acaa3d725dff62b6cfe00465db2477317d389ff23f6444401690c9a2

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