Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e8dfd87218d9f9…

MALICIOUS

PDF

34.7 KB Created: 2021-07-08 20:22:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 683f7eb8eaeda11ba39cbebfd3807634 SHA-1: 117144c06e389e4d1cc1135eb865238f2f2b87b3 SHA-256: 08e8dfd87218d9f989b2e3ae790893b0493d8382a5814c06a83b853273c81318
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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-spins-game-hack PDF link annotation
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/login-to-tiktok-free_GM835599320.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-hack-1021_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/codes-for-free-robux-2021-that-no-one-use_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/deluxe-ninja-sword-for-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-mod-menu-download-free_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-game-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/earn-robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-free-robux-d_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-counter-blox-cheats_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/pokemon-go-free-9-nerf_GM1094591345.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-mafia-cloth-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31F7 23044 bytes
SHA-256: 56d651a246f6aa39a283af2accc92818a4f60373aa2743f6ef4aaa70258df50e
font_01_sfnt_off000065a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A2 18008 bytes
SHA-256: b15e7f8da0838a6e4a017855d02c8a486f450db5f36fca14cd3b0cb8444cdf22

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