Malicious PDF — malware analysis report

Static analysis result for SHA-256 078c8aed7a053b9d…

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 01:21:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 28dfb5577249589c133577d22dc205b3 SHA-1: ec8a7d059fb8ccbb5e7bc331389bee3b0f8b6213 SHA-256: 078c8aed7a053b9d06a879f70deff30c769e8713fbca444ba5512fa42b7ca559
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically for Coin Master, directing users to a suspicious URL. This URL likely serves as a redirector to a malicious site or a phishing page designed to steal credentials or distribute further malware. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs supports a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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 http://netcdn.tw/app/406889139/coin-master-hack-game-hack PDF link annotation
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/team-panda-free-robux-website_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-roblox-gift-card-20219_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/pokemon-go-no-free-raid-pass_GM1094591345.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/best-free-minecraft-texture-packs_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_002_off00003606.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3606 22640 bytes
SHA-256: c13291aa455ae99f9ebe8a99030dc2ffd65126f0a83e3cd10577bb2a5a097431
font_01_sfnt_off0000685b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x685B 18004 bytes
SHA-256: 2f3a5855c5bac228d8d27cc7f61b57eebad79d58a924e470a0477843dff273c7

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