Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8d54608fa80ee9c…

MALICIOUS

PDF

46.1 KB Created: 2021-05-17 19:25:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: aa4902a5c4292e2d90d205ac4e5f2eb3 SHA-1: 7fd971fc84ba3aa2765f2bd56b18864215b4c67b SHA-256: d8d54608fa80ee9c89d6b7c4f116a57444d5528a353d7808bdc42f8a1e36389e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and spins to entice users into clicking malicious links. The embedded URLs, including the primary redirector at `https://netcdn.xyz/app/406889139/free-spins-coin-master-cheats-game-hack`, are indicative of a phishing or scam campaign. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/free-spins-coin-master-cheats-game-hack In PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/hack-robux_GM431946152.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/free-100-robux_GM431946152.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://mismiftahululumsentul.sch.id/__statics/gudangsoal/files/coin-master-spins-for-free_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_off00004d14.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D14 24524 bytes
SHA-256: fa5235247b2c57a4522ec1219c1f18d479d93c81cb6eeada6173ddc4998dd532
font_01_sfnt_off0000855d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x855D 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F0F 19212 bytes
SHA-256: fd668ecb0c4678fcbd7054d45e4819c3267df307d8537d7047d5a8807bc61997

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