Malicious PDF — malware analysis report

Static analysis result for SHA-256 d30e58e58e66e5f7…

MALICIOUS

PDF

47.4 KB Created: 2021-06-03 07:02:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: b13e7edac39d93bea36c22b66e862896 SHA-1: ae19a705807f9ad442e96716beea38a232cc7b81 SHA-256: d30e58e58e66e5f7a3f6ae873e94df8aa55b49f6a12a9275f77d9eaed8af67e3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, disguised as game hacks and generators. The primary lure appears to be related to Minecraft and Coin Master. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/479516143/minecraft-maps-pe-free-download-game-hack In PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-hack-tool-v1-9-pc_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-link_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/robux-hack_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://morishita-tc.com.tw/image/data/files/coin-master-hack-apk-2021_GM406889139.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_004_off00005271.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5271 25516 bytes
SHA-256: f5060b7e53fd71591ab5ff8ed4a5fc77bca260c67b5f4788956ad3ca0917b66c
font_01_sfnt_off00008bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB5 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off000095b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95B1 18620 bytes
SHA-256: 0821b230906a16eab24876bc900cf5b44140eb476c0c2d68670d368f294fcdb9

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