Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e7936bc5473812c…

MALICIOUS

PDF

45.8 KB Created: 2021-06-08 13:37:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3553bcd6a8848d51ffb397cc1f2ffddd SHA-1: e64a35cc5dd8d07c1b3689483e54aadcf5ad1434 SHA-256: 4e7936bc5473812ca097a554519acc3f5de0dae2a13b8c48da8c8bf502292d80
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free Robux and game hacks to entice users. It contains multiple links, with the primary one redirecting to a known malicious infrastructure. The document body, though partially corrupted, contains references to the lure and the malicious URL, indicating an attempt to drive users to a potentially harmful site. No scripts were extracted, but the presence of malicious redirector links and the lure strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/roblox-watch-ads-for-free-robux-game-hack In PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-fre-robux-on-a-computer_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-hack-review_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-scam_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-admin-free-spins_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_004_off00005282.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5282 25708 bytes
SHA-256: a0c68f5203f06cabf218f22ab729625771632db31976e02d7d7fff7d6979ea58
font_01_sfnt_off00008e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E93 18956 bytes
SHA-256: 545fbb45473672e41f98644822067083eb766d04a521db0abb12aa307e56633e

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