Malicious PDF — malware analysis report

Static analysis result for SHA-256 90a88edccff04d85…

MALICIOUS

PDF

44.3 KB Created: 2021-05-19 17:09:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 805c698912f5aca422bad065256d1aaf SHA-1: 4210fbf222b8e17afc99fc166e114df7394f2d83 SHA-256: 90a88edccff04d85115f57d917fe1e95099815fe75a0138cc9d76c1cecdeea62
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary lure related to 'Pokemon Go Free Legendary Pokemon' and game hacks. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a malicious intent to redirect users to potentially harmful sites. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering tactic to trick users into downloading further malicious content or visiting phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/1094591345/pokemon-go-free-legendary-pokemon-game-hack PDF link annotation
    • https://tnupacktour.com.tw/image/data/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/robux-earning-sites_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004909.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4909 23888 bytes
SHA-256: e25972ac7b7be86b57135c96cce5e818775954d960e7c3647e487e22b1c2241d
font_01_sfnt_off00007f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F19 2920 bytes
SHA-256: 601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7
font_02_sfnt_off00008933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8933 18712 bytes
SHA-256: 81795dc9152d561cb4d8e1ce9e62f1fbcc5b2647f493a3cc40c21a0f024086b2

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