Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c42a57ca56e7088…

MALICIOUS

PDF

34.0 KB Created: 2021-07-09 03:26:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 58779c987f80cc213d8c46e8c862ff96 SHA-1: 2cae9b6d2eb7686172b657b5a41f37eb063266aa SHA-256: 5c42a57ca56e708887ddf1b5347f85caeb0dca93763076b6eda172c442ed82ba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The document body and extracted URLs strongly suggest a lure for users seeking in-game advantages, which is a common tactic for phishing or malware distribution. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a high likelihood of a phishing or scam attempt.

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/479516143/minecraft-realms-free-codes-game-hack In PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/free-roblox-fast-load-v3rmillion_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/hacking-roblox-fnaf-rp_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/how-do-you-speed-hack-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/flood-escape-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/roblox-games-free-robux-bye-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/roblox-murder-15-hack_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/how-to-know-if-someone-is-hacking-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.maputripuitalaga.sch.id/__statics/gudangsoal/files/free-roblox-glasses_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
font_00_sfnt_off0000322c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322C 21732 bytes
SHA-256: 73bbded76512341af49fbced1b5a012baa8fe57c025baf27ae8dd4907691903f
font_01_sfnt_off000061b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B0 18508 bytes
SHA-256: df10bd94edc5891a154685fbdda3a803e57035b64e9c0e6d7a5459cca4336595

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