Malicious PDF — malware analysis report

Static analysis result for SHA-256 96c2810a50b9f1b9…

MALICIOUS

PDF

38.5 KB Created: 2021-05-24 08:57:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5de77a75da9be7f729ebb23257d263b0 SHA-1: 761bd7cc9f5d2ead982f6fb75aa8c2697246a9a6 SHA-256: 96c2810a50b9f1b9a89062b0ed2d5df3de31f15f151fc1d96e320cec37cc29f0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to websites offering 'game hacks' and 'free currency generators', a common lure for phishing and malware distribution. The heuristic firings confirm the presence of malicious redirector links and a general ML classification of maliciousness. While no scripts were explicitly extracted, the document body and heuristics strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/406889139/coin-master-free-daily-spins-link-game-hack In PDF document text
    • https://dr-willmer.de/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003315.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3315 24684 bytes
SHA-256: 74449603c57600d2ae246012c7c94d3eaf405df6fa8af15385a990ff4211b9ed
font_01_sfnt_off00006a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A76 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00007460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7460 18476 bytes
SHA-256: 219409e4a96e727ac7d03afbf10b928993c8ec078f24206d8d8724722cb954a1

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