Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a85e5cc031338e…

MALICIOUS

PDF

36.1 KB Created: 2021-05-21 02:52:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ab155448c652c62a11fbfca1d10b3e17 SHA-1: 0a836c84fc897fbea44c899ec890910b2ef55616 SHA-256: 44a85e5cc031338e34daa2e3b7f6b20b128968d2062a7de55fd2a26db9b9ce01
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to what appears to be a malicious redirector infrastructure, specifically advertising 'Roblox Hack Ga' and 'free generator' lures. The document body also contains a prominent call to action to access a Roblox generator. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/roblox-hack-ga-game-hack In PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/daily-spin_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/pokemon-go-free-codes-2021_GM1094591345.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_off00003308.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3308 24884 bytes
SHA-256: f327218069d0923c89a078d66004809fc0d7cac32ec2cd493b279dbafe77f6eb
font_01_sfnt_off00006bd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD6 18184 bytes
SHA-256: 3275d650180bfb45a9fb7d5756aac43dcbbafe87c7818dab7a1b2e1f44194404

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