Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2f32c85f20edc86…

MALICIOUS

PDF

36.3 KB Created: 2021-06-23 08:03:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9ff7b2fd424744291ff4d70bd9d10154 SHA-1: 38eb1ca607224e7459111cab0c98dec861ca6acf SHA-256: e2f32c85f20edc86d1598486e2fc3272cea3a101b1eb8b87b4784c6e06719a56
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector pointing to 'http://netcdn.co/app/431946152/crap-my-roblox-account-just-got-hacked-game-hack'. This link is presented as a lure for game hacks or generators, suggesting a social engineering tactic to trick users into visiting malicious sites. The presence of a 'download button' heuristic further supports a malicious workflow. No scripts were extracted, but the embedded URLs and redirector activity are strong indicators of malicious intent.

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.co/app/431946152/crap-my-roblox-account-just-got-hacked-game-hack In PDF document text
    • https://perpustakaan.itda.ac.id/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-hack-download-free-pc-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-aimbot-cheat-engine_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/get-robux-now-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-codes-28_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/tiktok-free-view-kong_GM835599320.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-hack-in-roblox-prison-life-no-virus_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-hack-to-get-a-password-on-roblox-account_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/youtube-be-a-parkour-ninja-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-boxing-simulator-cheat-engine_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33F3 22728 bytes
SHA-256: 4b5fa52fd5a59ead836fb8b0a80b2f84d86c8fc83afae4ac3692580eeffa8a1b
font_01_sfnt_off000066bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66BB 19792 bytes
SHA-256: 613d0dae14c3a2ebe7f8c7ff2966ff10de242e9062b586baa12ac03f5036b889

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