Malicious PDF — malware analysis report

Static analysis result for SHA-256 608d7510d3147df0…

MALICIOUS

PDF

44.6 KB Created: 2021-06-10 23:36:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bd6903b0492f69e6d43ac898ef592418 SHA-1: 584b1749f99ddfa24a54dd0652d35372beb0a792 SHA-256: 608d7510d3147df076231c37410ff76e9df3453b1a9eae86bbbdbceb71d9cfa0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically promoting 'game hacks' and 'free generators'. The document body, though partially corrupted, contains text related to Roblox and game hacking, reinforcing the lure. The presence of embedded URLs and the critical heuristic firings strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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-roblox-vehicle-simulator-game-hack In PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-strucid-hacks-pastebin_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hack-generator-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/get-robux-now_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/pubg-uc-ykleme-midasbuy_GM1330123889.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/ww-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-adopt-me-free-pets_GM431946152.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_off0000505a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x505A 24504 bytes
SHA-256: b6544af7390bebac4cadeb5c1c01d89604a0aaa0fb44915a4a85fd184a63ecd0
font_01_sfnt_off000088ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88AE 19268 bytes
SHA-256: a4726722c8cbc3a6ba07ebbdf4b86116755271eb857dd0a636a277fca1616832

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