Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a08d70e7b0f7182…

MALICIOUS

PDF

40.8 KB Created: 2021-05-22 09:24:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 046c260b723cd5bbced5d0368e73d468 SHA-1: bff3a3331e4fc469fcd6e188388966393a680f73 SHA-256: 4a08d70e7b0f718294e209bb4467d117a863d34c2264e7b043a8e4f26f5d720c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded URLs, with a primary lure pointing to a 'free Minecraft Alt Generator'. This URL, along with others, redirects to potentially malicious sites. The ML classifier and specific heuristic firings indicate a malicious intent, likely to trick users into downloading further malware or engaging in phishing activities. No scripts were extracted, but the document structure and embedded links suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7499

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-alt-generator-game-hack PDF link annotation
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/earn-rbx_GM431946152.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://sedotwcsaluranmampet.com/ckfinder/userfiles/files/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • https://code.giftcards.comIn 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_002_off0000335a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x335A 29508 bytes
SHA-256: b5752d5fa12ecbdc448e8dac9ed66f243ab44aa7a0fb4d0faddcc4d5ce2685dc
font_01_sfnt_off000075e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E5 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F97 17784 bytes
SHA-256: 66ae3cfb6d310f144f42187aaa203441353bb0cc88c1a3915b2f7a14fa3c41b8

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