Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a67964fd4a9333…

MALICIOUS

PDF

48.7 KB Created: 2021-05-30 11:52:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1c5cea11d871942a37382df8e5e1a5eb SHA-1: a21cf667aa7227f55cc68e3ef65c19729ead9edd SHA-256: f2a67964fd4a93335fbfe0c9480654fd100601373bbf6e1d22844ba89b564862
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically disguised as 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-robux-obby-game-hack. While no scripts were extracted, the presence of these links and the ML classifier's high confidence indicate a malicious intent to redirect users to potentially harmful sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8017

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-obby-game-hack In PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-robux_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.imparadigitale.it/wp-content/uploads/fsqm-files/is-there-a-way-to-get-free-robux_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_003_off00005569.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5569 27020 bytes
SHA-256: 5bfcb469df0c080c7d325721cc2533fb6ec9a41ba0bcf272a5ad06c79238bf71
font_01_sfnt_off000091cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91CF 2864 bytes
SHA-256: 717ade8aa858c17404f1888d0ee4709f3f1f755d8bed4f1596de311ecf61b684
font_02_sfnt_off00009bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB1 18196 bytes
SHA-256: adb317c4997580e24d4ed6f1d3168dfe6823b431b7b24dbbc6245ab95f909cf9