Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee7d9dc9527a70d…

MALICIOUS

PDF

50.7 KB Created: 2021-05-31 20:31:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: cd51dd74a6bfe815f96669bc4be311d2 SHA-1: 572f9490be443d5fc63053ba12b4a1179f9a7894 SHA-256: fee7d9dc9527a70d75b89737b21d8a23a1258ed85f8d245a5f6e3b333555ab2a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for free in-game currency and hacks, directing users to a malicious redirector. The document body and heuristics indicate a scam designed to trick users into clicking malicious links. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9779

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/431946152/free-robux-hack-generator-no-survey-no-human-verification-game-hack In PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/free-roblox-torso_GM431946152.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/free-tiktok-like_GM835599320.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/roblox-apk-robux-hack_GM431946152.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/free-robux-come_GM431946152.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/free-views-tiktok_GM835599320.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/free-codes-in-roblox-working-2021_GM431946152.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/cheat-aimbot-roblox-mdiafire_GM431946152.pdfIn PDF document text
    • http://test.xdialogue.nl/wp-content/uploads/fsqm-files/is-it-easy-to-hack-on-roblox_GM431946152.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_004_off000054b0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54B0 29132 bytes
SHA-256: 66f6ba3ba52d1244ea83cc2da45780fce156fe648bb0577747884e066ea3da5f
font_01_sfnt_off000096ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96ED 2852 bytes
SHA-256: e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f
font_02_sfnt_off0000a0af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0AF 19324 bytes
SHA-256: 6bfe3619fecb79a10ac4bbfa5ac65e648d6549279f7a82ac85ece4fdf5d168f2