Malicious PDF — malware analysis report

Static analysis result for SHA-256 02bf18fb0d0ad354…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 12:17:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d5b94c7e28462dc6897aedf167301113 SHA-1: d84f23324a0d32564118a2cb61c325b5afa3cb76 SHA-256: 02bf18fb0d0ad3547330da72600d93adee8246b65acd55aa83cc7f1e5a507df3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a known malicious redirector. The document body and embedded URLs reinforce this by advertising "Coin Master Hack Apk Download 2021" and similar game-related cheats. The primary IOC is the malicious redirector URL, which is likely used to deliver a secondary payload or phish for credentials.

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/406889139/coin-master-hack-apk-download-2021-game-hack In PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-emotes-hacks_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/pubg-uc-or-g_GM1330123889.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/robux-earning-sites_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/test-roblox-clothes-free_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-change-your-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/tiktok-followers-for-free_GM835599320.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_off000033fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33FC 22164 bytes
SHA-256: 69b8677f931bea719632206334fc91d7a187a0239a7e0d57ef48ac7b4b01ba4c
font_01_sfnt_off00006529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6529 19160 bytes
SHA-256: 74154339b294d6feca0152a4072c83326c1fc7d9ddb702fdec28eb90277bbd47

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