Malicious PDF — malware analysis report

Static analysis result for SHA-256 155a6d8e472fe53c…

MALICIOUS

PDF

36.6 KB Created: 2021-05-20 17:04:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c6414b0ce52d6727251418f5c062dd83 SHA-1: d69add79eb8c8014eee85606614503147108e34c SHA-256: 155a6d8e472fe53caefed2ec07a8ee69613a2aa8e0a2e8ffc00be6974a78fcbc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs pointing to sites offering game hacks and cheats, strongly suggesting a lure for malware download. The ML classifier also flagged the PDF as malicious. While no scripts were directly extracted, the presence of external URIs and the document's deceptive content indicate a phishing attempt to trick users into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/can-you-play-minecraft-for-free-game-hack In PDF document text
    • http://nitetpl3.com/images/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • http://nitetpl3.com/images/coin-master-daily-spins-and-coins_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_off000033d9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33D9 25228 bytes
SHA-256: 0c17c258aae81815d7c1cd77d1bc178ed6b083bd68ca36ef5e5e0056a4786596
font_01_sfnt_off00006d7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7A 18420 bytes
SHA-256: 81bede04d90c080fa29d20db124f1531358f39ee91ce610139dedd08dc3401fc

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