Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa27270ea1f3b5d8…

MALICIOUS

PDF

42.4 KB Created: 2021-06-14 01:11:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 60f9547dbb206dedafc3aa237791490a SHA-1: e1e2c75020728529582faa66f5d6d84d245e0d40 SHA-256: aa27270ea1f3b5d8585d1951d4da78315acda4320db09de6472b8e39644f8ad9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, masquerading as a 'free generator / game hack'. The document body and extracted URLs strongly suggest a lure for free game currency, likely to download further malware or phish for credentials. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/how-to-get-free-robux-no-survey-2021-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-prison-life-btools-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-redeem-robux-code-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-hack-any-items-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-clothes-no-decals_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-20210-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-cheat-for-two-player-millitary-tycoon_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/server-for-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/rewards-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robuxian-youtube-page-secret-claim-free-robux_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_off00004625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4625 25136 bytes
SHA-256: b382019e462d21bb2e8a748c3375021b201a3cbc54cf1e6f771213fdaff3cdb0
font_01_sfnt_off0000804f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x804F 19164 bytes
SHA-256: 5c21de3510a44f00d90b21ac689951b0a9bf42a7d109bc1efd20445f79415832

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