Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab8af5db0f1c8dff…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 22:57:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 95e955c88e844da8393a589cbe8ce70d SHA-1: 99b0318d78da6302c55d0ee9e1fc14980adf8eb5 SHA-256: ab8af5db0f1c8dff3cd750d2a66849946096633096124397e6bc40c85c02cfe2
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a link farm strategy, presenting numerous links that promise game hacks and free items for popular games like Roblox and Coin Master. The primary lure, 'free angel wings on Roblox', redirects to a suspicious URL, suggesting a phishing or malware distribution attempt. The document's structure and numerous external links indicate a malicious intent to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • 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.co/app/431946152/free-angel-wings-on-roblox-game-hack PDF link annotation
    • http://www.perpustakaan.unda.ac.id/repository/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/who-to-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/como-tener-hack-para-en-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/i-am-hacking-roblox-high-jump_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-military-pants-template-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-secret-cheat-codes-for-music-its-raining-tacos_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/make-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/earn-5-robux-free_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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
font_00_sfnt_off000032f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32F3 21980 bytes
SHA-256: 233fc3e16bfb61b7677a050431cf7c671f653f7389877af4e5f58e6305700ffc
font_01_sfnt_off00006373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6373 18968 bytes
SHA-256: b0db836f6a35d21054d4938f5613971045c625bb2187fe3f61ee503b2f158151

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