Malicious PDF — malware analysis report

Static analysis result for SHA-256 154b7f4bcdad667c…

MALICIOUS

PDF

42.3 KB Created: 2021-05-16 08:43:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 92279fd7b3df4118d9eace60408b2a46 SHA-1: d3169c04cc962cdebcdb819e90445d24b9635d36 SHA-256: 154b7f4bcdad667c4fce957bb196278cd017785d65815cf71d132cf7c54bc8b4
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs, including one pointing to 'free-games-like-coin-master-game-hack', suggesting a lure for potentially unwanted or malicious downloads. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a visual download button heuristic further supports a malicious intent. The document body, though partially corrupted, also contains references to game hacks and downloads, reinforcing the phishing or malware distribution theme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-games-like-coin-master-game-hack PDF link annotation
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://elma.alazhar.sch.id/__statics/gudangsoal/files/how-to-play-minecraft-for-free-on-computer_GM479516143.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
stream_003_off00004b1e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B1E 24508 bytes
SHA-256: 74c7b3c27ef91a013bf85aaf78c335b8d6a7007cc712d91bc2e824f9a9b20257
font_01_sfnt_off0000836c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x836C 18140 bytes
SHA-256: 0fa8c8b4839815decb7824e6abfd23c338a1fcad8391028ddb14be23d50d94bc

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