Malicious PDF — malware analysis report

Static analysis result for SHA-256 5301d255658e20a8…

MALICIOUS

PDF

43.8 KB Created: 2021-05-10 17:05:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b6abc17bb9b0c58a7f6db3f032e812b2 SHA-1: 6d19b13e2ada0b27d75a76736d72357f5def26e4 SHA-256: 5301d255658e20a8d6cf1f05e05c5baaaa2d909d23b216184566e56a4938a6e5
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a call-to-action phrase, indicating a lure to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests an attempt to redirect the user to a compromised site. No scripts were extracted, but the overall pattern suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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/431946152/free-robux-kid-friendly-game-hack PDF link annotation
    • http://elearning.mtsn2pandeglang.sch.id/__statics/gudangsoal/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2pandeglang.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2pandeglang.sch.id/__statics/gudangsoal/files/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2pandeglang.sch.id/__statics/gudangsoal/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2pandeglang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2pandeglang.sch.id/__statics/gudangsoal/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2pandeglang.sch.id/__statics/gudangsoal/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2pandeglang.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2pandeglang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-daily-1-ga_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_off000040d9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40D9 26904 bytes
SHA-256: b1dc3ff624386b991a400e626dbe95299d11be883225989a577e6c6b3f3e9147
font_01_sfnt_off00007eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAB 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8895 18560 bytes
SHA-256: 454f7722b5e362ebb3dfaacf6303323d9fe80b0a3b091af17d82283aff73172d

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