Malicious PDF — malware analysis report

Static analysis result for SHA-256 722a29528aee7dca…

MALICIOUS

PDF

44.8 KB Created: 2021-05-17 11:52:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 04fb0ef8a5f2a906c915730e0e2e899d SHA-1: 2ec96ea7c715d6bfc8f3891e5b5a62e79c4e34c4 SHA-256: 722a29528aee7dca116358ac6f83f50885352d9ae54269e88cdc53f2cdf992bb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector leading to a "game hack" lure. The document body, though partially corrupted, contains text related to game cheats and includes the malicious URL. The presence of multiple links and the ML classifier's high confidence score indicate a deliberate attempt to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-master-daily-free-coins-link-today-game-hack In PDF document text
    • https://www.acacss.com/images/login-robux_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/free-roblox-gfx_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://www.acacss.com/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/free-robux-live_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/coin-master-unlimited-spin-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/how-do-you-get-robux_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a23.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A23 24264 bytes
SHA-256: 07990b7802403206788a2f55040d08e1e921ad14a11f306a09be4b34147e8633
font_01_sfnt_off000081f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F6 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008be1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE1 18476 bytes
SHA-256: 4e997083ece3f599a87e8960a4d85608706b67604b90560f7b4d74d0b586c961

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