Malicious PDF — malware analysis report

Static analysis result for SHA-256 733c88ff146e422b…

MALICIOUS

PDF

48.6 KB Created: 2021-06-03 07:25:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 32f202b6642d4c4730985216473f08ab SHA-1: 0f24373fdf90a923a2bbfa44f146165a4704006d SHA-256: 733c88ff146e422be6d4f88d4c45f788a9d3d85ac3068902c9733d387c2491e6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.online/app/431946152/roblox-army-free-robux-game-hack PDF link annotation
    • https://elibrary.stp-aviasi.ac.id/repository/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/master-hack-coin_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/can-you-give-me-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/pokemon-go-free-promo-codes_GM1094591345.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/minecraft-windows-10-mod-menu_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_off00005093.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5093 25776 bytes
SHA-256: e2a3ba3cb70a74bf68691150e71b0e378d54f4570f1493d4e9b42bebbfb68ea9
font_01_sfnt_off00008d13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D13 4008 bytes
SHA-256: 982b414f0c1a2f334cbcfa74b37c63e373061dba1812816e371faa6e65399a16
font_02_sfnt_off00009aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA1 18528 bytes
SHA-256: 3fb3182e9b0518fecce2d6326c4443e9fc052433b5a2fc23416796f92e2510b3

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