Malicious PDF — malware analysis report

Static analysis result for SHA-256 46179c814a30a60a…

MALICIOUS

PDF

47.5 KB Created: 2021-05-12 08:03:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: df3d9ebe1ae1933f0fccaf7c70ba16cc SHA-1: 14d2e521530b79f94de88f04ed12ea78e3a191c9 SHA-256: 46179c814a30a60a68c3fbcb59e9832672be0daf2ac714e14c2fa0e01e17b8f9
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links pointing to websites that promise game cheats and hacks, indicating a phishing or malware distribution attempt. The heuristic 'PDF_SEO_LINK_FARM' specifically flags the presence of a large number of external links, many with long, SEO-optimized titles, suggesting an attempt to attract users through search engines. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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.xyz/app/431946152/free-robux-games-on-roblox-game-hack PDF link annotation
    • http://www.pspmrsmlangkawi.com/opac/repository/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/cm-spins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/hack-coin-master-download_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_003_off00004905.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4905 30280 bytes
SHA-256: e1274b8b50802ef6f71f41e605c90981d800043374de79b9d2829462ad7001e0
font_01_sfnt_off000089e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E4 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000968c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x968C 18576 bytes
SHA-256: 121d272924a8948b6bfdf19867642727f57edf659587de43eb46571e5003926c

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