Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e46860e4db16489…

MALICIOUS

PDF

35.5 KB Created: 2021-07-06 22:11:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 69548b559396ebf7b2cfa6342a48eaea SHA-1: 361e7acc3690bcf01bb7e87d3959763cbe7610a2 SHA-256: 9e46860e4db1648943478bdb6aadbe4a6a1044561fc7999480d607d39179c64d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game hacks, directing users to a known malicious redirector. The embedded URL `http://netcdn.tw/app/479516143/how-to-get-minecraft-for-free-game-hack` is associated with malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially malicious sites.

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/479516143/how-to-get-minecraft-for-free-game-hack In PDF document text
    • https://encounternepal.com/userfiles/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/its-free-roblox-meme_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/rewardex-robux_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/roblox-free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-robux-no-inspect-no-info_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/roblox-deadzone-item-hack_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/get-robux_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/wizard-life-roblox-hack_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/roblox-online-free-play-now_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/haktuts-coin-master-free-spins-2021_GM406889139.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_off00003778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3778 22408 bytes
SHA-256: 3e39223cd1ebb81e0e61beeb202a5075e1ab1fec5a9b989600eac1d79e936c20
font_01_sfnt_off000068b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B5 18164 bytes
SHA-256: 38b14255ac27b6861525ff1bdc726797405021bf36bbc514593b3ffe59b08c64

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