Malicious PDF — malware analysis report

Static analysis result for SHA-256 4abd6b9d06c9583c…

MALICIOUS

PDF

42.0 KB Created: 2021-05-15 02:01:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0a315dfb5972681126ffe5deb7b7b9df SHA-1: 6ebc6e0df4770d8d2306e8af15940e21627de50a SHA-256: 4abd6b9d06c9583cb1ad0a77a2a8457626a1eb3b3eac6bee3a2d48c5cd1a995c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple embedded URLs and a heuristic firing for a 'secret recovery' lure, indicating a phishing attempt. The document body, though heavily obfuscated, contains text related to game hacks and free currency, reinforcing the lure. The presence of external URIs suggests the document is designed to redirect the user to a malicious site, likely to download a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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-spins-coins-coin-master-game-hack PDF link annotation
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-spins-apple_GM406889139.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_off000047ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47EE 28744 bytes
SHA-256: d59d4aaf4d22202052f73c89dd1cf109e4a0b3b78ca67cb97c42e2a090b0c059
font_01_sfnt_off0000832c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x832C 17884 bytes
SHA-256: 18816d8d761583b578c9833b8849e2eeaed27ef2f16a893d2032c58e3f8148b6

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