Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ae980889ce528eb…

MALICIOUS

PDF

49.2 KB Created: 2021-06-11 09:09:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: af3e5135ab171f343a05851f88412385 SHA-1: cc370fa609025ec0553cd64af5b916302626a0ee SHA-256: 7ae980889ce528eb5f280483f16a8ea7b278cb1ba505aaea0b16b4567ea5fdcd
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and document body text that explicitly mention game hacks and cheats, such as 'Roblox Hack' and 'Coin Master Hack'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms that a primary URL leads to known malicious redirector infrastructure. The presence of embedded URLs and the nature of the lures suggest an attempt to trick users into downloading malware or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.tw/app/431946152/solos-v-1.2-roblox-hack-game-hack In PDF document text
    • https://perpus.upp.ac.id/digilib/repository/hackcom-for-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-free-robux-very-easy_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/pagina-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-free-items_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-free-spins-link-2021-hack_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_004_off00005413.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5413 27372 bytes
SHA-256: d7df358c962e64b67555c668af43e528f75c24779071afe854bd7dc21b43df8c
font_01_sfnt_off000092a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92A9 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C93 18612 bytes
SHA-256: 4017ebc3c32e82be56a0037525bbe655e483301118a6bad56408b689f323f88c

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