Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ee0700e98a4946a…

MALICIOUS

PDF

46.5 KB Created: 2021-05-16 01:02:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 7a4d517e987f1cf1d06e18066b9599aa SHA-1: 7caaa16bc8132ae0e6e42a205bbf173dcc852f9c SHA-256: 6ee0700e98a4946aedc173d92c71d1df2b2edf4dab89aa7f810998a9371a1da4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are identified as malicious redirectors, specifically luring users with promises of game hacks and free items. The document body and extracted URLs strongly suggest a phishing or scamming attempt designed to drive traffic to potentially harmful sites. While no scripts were explicitly extracted, the nature of the PDF and its embedded links points towards a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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 https://netcdn.xyz/app/406889139/coin-master-daily-free-spins-link-today-2021-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/daily-free-spins-coin-master-2021_GM406889139.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_off00004c85.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C85 25460 bytes
SHA-256: 76592c6a384ed6643667129943758fc1bc98050c6585a9e238256aef769daf44
font_01_sfnt_off000086ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86EA 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000090d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D5 19052 bytes
SHA-256: 51ec1fd699785aa8f843f12306ac352f9679003eb9b4544ea09afbac11be1d71

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