Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bab70ce27ff3b72…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 08:24:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 120784f8671cc189478d8eff2f6a46b9 SHA-1: 09dc5533290b9902629184f7af862b549bebdfdd SHA-256: 7bab70ce27ff3b72f4be26971b3ce1713821a43b4e188da379cf155a9f975af1
122 Risk Score

Malware Insights

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

The PDF document contains numerous external links, a technique often used for SEO manipulation or to redirect users to malicious websites. The ML classifier strongly flagged this PDF as malicious, and the presence of a "download button" lure further supports a malicious intent. The document's content and linked URLs suggest a focus on game hacking or cheats, which can be used as a pretext to deliver malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.online/app/406889139/how-to-hack-coin-master-game-2021-game-hack PDF link annotation
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/spinuri-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coinmaster_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-to-get-free-robux-com_GM431946152.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_004_off00004d09.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D09 25172 bytes
SHA-256: 714fa746e46897227c4580b2ab4ebde00bbc792680c1a419023cc9054b602404
font_01_sfnt_off000085fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85FE 18540 bytes
SHA-256: 0dd6564037b1693bc387ec554476f6901470b6523a56a44e31cb3c159dc675b0

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