Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc7ae338234577d8…

MALICIOUS

PDF

32.4 KB Created: 2021-06-29 22:35:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: c034b2528b2e793eb8d7a076dfca9a0c SHA-1: 5b152996bf6ad4d11ea512c4549c47deae997fc5 SHA-256: cc7ae338234577d840deaf4b4c4304caeefe82bc97e61885c2c8658145f6af32
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and potentially malicious content, disguised as game hacks and cheats. The document body and embedded URLs strongly suggest a lure for users seeking advantages in games like Roblox and Coin Master. While no scripts were explicitly extracted, the nature of the links and the heuristic firings indicate a phishing or social engineering attack aimed at redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/roblox-prison-life-cheat-engine-game-hack In PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/exploit-hack-bee-sworm-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-roblox-accounts-with-robux-2021-may_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-how-to-create-a-group-for-free_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-bc-roblox-hack_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-playset-for-free-shirts_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-hack-no-download-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/redeem-code-roblox-free-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/hack-for-roblox-bee-swarm-simulator_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/infinite-robux-hack-2021-sc_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/claim-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-roblox-robux-generator-no-survey-hack-tool_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE5 21540 bytes
SHA-256: 85db3b71568347753358d0a538de62c1ffdabcf83bda12224b140b40e7b39e3a
font_01_sfnt_off000059fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59FE 19028 bytes
SHA-256: ef793f41fb4750e561612d581e84ce34e0edd76878eb80dc9d5284812c1ec697

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