Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0dfae73da2c648…

MALICIOUS

PDF

41.2 KB Created: 2021-05-10 16:30:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: cc14754919e7d608bdfa06a64c5a600f SHA-1: 0063e7f6e48a1bc338f7f919359aaebfb584a7a7 SHA-256: ab0dfae73da2c64838eca3809a362147b275953456c49a59c3388d66b8b26208
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting a 'game hack generator'. The presence of a visual download button and the ML classifier's high confidence score indicate a malicious intent to lure users into clicking these links. The document body and embedded URLs suggest a scam related to in-game currency or hacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9933

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/406889139/coin-drop-master-free-game-hack In PDF document text
    • http://floreswindows.com/images/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://floreswindows.com/images/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://floreswindows.com/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/robux-generator_GM431946152.pdfIn PDF document text
    • http://floreswindows.com/images/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://floreswindows.com/images/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://floreswindows.com/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://floreswindows.com/images/hack-a-game_GM431946152.pdfIn PDF document text
    • http://floreswindows.com/images/free-robux-no-survey_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_off00003f32.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F32 24008 bytes
SHA-256: 36dc7e81914a547a4bb0bf50498b8e5fa9af45794dcc44b1f1d2e24cb80a752d
font_01_sfnt_off00007599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7599 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4A 18056 bytes
SHA-256: 11f18688a2b2da9a5c9f112f1650d1ea79688667bc5daef8815cb9676fc0e265

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