Malicious PDF — malware analysis report

Static analysis result for SHA-256 0008e40c21c99609…

MALICIOUS

PDF

46.8 KB Created: 2021-06-11 02:03:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c9c9624e2c75f91716f7ac62f59e60b2 SHA-1: 314ae49998be2ddf14ce25962ca6d8c99b756c4d SHA-256: 0008e40c21c99609450cdf5fc910c687893261a1e13cab67e8764f617eb7683b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free currency' lures. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow.

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.tw/app/431946152/how-to-hack-in-robux-easy-game-hack In PDF document text
    • https://www.acacss.com/images/earn-robux-today_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/hack-robux_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://www.acacss.com/images/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • https://www.acacss.com/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • https://www.acacss.com/images/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/how-to-cheat-in-roblox-pet-simulator-2021_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.acacss.com/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/easy-robux_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000503c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x503C 25388 bytes
SHA-256: 2f47b0532dca1fe384803cb2a8f3760361ba567ed0e5767b947d42e58d32535b
font_01_sfnt_off000088ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CE 2984 bytes
SHA-256: 2df87bbe4e27b27e34c872c092d0522acd977d05f5cbde7ed5e1fdfeb59cb318
font_02_sfnt_off0000931c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x931C 18592 bytes
SHA-256: 53106f2832473bd2faa95c0be076ba0c43cb902e9d266d241e079d227ba011f1

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