Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f7261f70ac8dc85…

MALICIOUS

PDF

43.5 KB Created: 2021-04-23 13:40:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 74a927fe54048361bc5b93291cfdf5a2 SHA-1: 61546244d5f2c04c3473041a826244d49bed620b SHA-256: 0f7261f70ac8dc8534d836b9f78fa3cc60094eab1542142b06479b349a654967
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains multiple links and a lure related to "Roblox Piano Hack" and "free generator / game hack", impersonating the Apple brand. The primary malicious link directs to a suspicious domain, suggesting an attempt to phish credentials or deliver a payload. Although no scripts were explicitly extracted, the PDF structure and embedded links indicate a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netsecure.top/app/431946152/roblox-piano-hack-game-hack.
  • 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://netsecure.top/app/431946152/roblox-piano-hack-game-hack PDF link annotation
    • http://lib.akpnbahtera.ac.id/repository/roblox-afk-cheat-download.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/roblox-superhero-simulator-hack-script-pastebin.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-roblox-ban.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-robux-for-free-without-signing-up.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/5-ways-to-get-free-robux.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-free-robux-on-safari.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/tampermonkey-roblox-robux-hack.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-free-tix-in-roblox-high-school.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/roblox-injector-hack-2021.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-aout-2021.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000041f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x41F0 25868 bytes
SHA-256: 2d51deaeee02a0561daf1ddc63956f81925dd89f9fdda47b6a6df898e814605c
font_01_sfnt_off00007dc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC9 2848 bytes
SHA-256: 4737c2778a085e0cb49e73f3b054b1a71e3f40720d213b4bfda97f95a31bfbf1
font_02_sfnt_off0000878b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x878B 18456 bytes
SHA-256: b3a5bdafa913fbeb08409da0979c792cb3491f79dd739ad0ffcb7a8a40d00987

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