Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec44c753cd3a7bb3…

MALICIOUS

PDF

42.2 KB Created: 2021-05-16 03:05:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3581537748647f6982cd6d21e99c416a SHA-1: 14ca0731471e5c7e652f04b79701881bc239b24c SHA-256: ec44c753cd3a7bb35bb8538a27de451a8f0d64011042a8925201c950d9b0da76
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 0.9971

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 https://netcdn.xyz/app/479516143/free-minecraft-skin-packs-game-hack PDF link annotation
    • http://pwpyemen.org/images/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/rbxdemon_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-spin-ml_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_off0000498a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x498A 25520 bytes
SHA-256: fc1bed013a3a8e56f7c8fbe858134e42a45d6e5f129798b68e6512e0e5392c6f
font_01_sfnt_off000083fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83FC 17892 bytes
SHA-256: 3d88f62d7f103248f07683485ae665a8ae7a7912bf87b287aa517b4ed8ad8cc7

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