Malicious PDF — malware analysis report

Static analysis result for SHA-256 441c00a15b3e5fd3…

MALICIOUS

PDF

35.0 KB Created: 2021-07-07 13:21:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c3bacf41ce9dace71f98020437ff3aea SHA-1: fb98f5b614b6bad7c1ca6387d360db7c050bd786 SHA-256: 441c00a15b3e5fd3d81edb55af1d786d66a1cb7e7ea67c452ccad583ad113d60
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings indicate that the PDF is designed as a lure to redirect users to known malicious sites. While no scripts were explicitly extracted, the nature of the embedded URLs and the lure suggests a phishing or scam attempt, likely intended to lead users to download further malware or compromise their accounts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-spins-link-today-twitter-game-hack In PDF document text
    • https://morishita-tc.com.tw/image/data/files/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-time-hack-ios_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/robux-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/offer-for-pubg-uc_GM1330123889.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/hack-para-roblox-2021_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-spins-and-coins-for-coin-master-game_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_off00002ff0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FF0 23140 bytes
SHA-256: a7405968848da55b638f8a62505639984c56dea7c0c211fd50764cdd8c9a201d
font_01_sfnt_off00006431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6431 18864 bytes
SHA-256: 2193e06c5c3e15f484914b1efa266409fa8c1e9afcaa84d0338c1082155419f6

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