Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa7a38339b01abf4…

MALICIOUS

PDF

45.0 KB Created: 2021-05-17 04:34:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 61d5780c6c57dafd0be5745604bac705 SHA-1: 625d3ab08ee78d308ea212d3278444ebbdd42081 SHA-256: aa7a38339b01abf4413da5424498005279f4bb22b6f00bfe26668e7f54cce02c
160 Risk Score

Malware Insights

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

The PDF contains multiple links to a redirector service, which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'free coins for Coin Master' and a URL that aligns with the heuristic findings. This suggests the document is a lure to trick users into visiting malicious sites, likely to download further malware or engage in scams.

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/get-free-coins-for-coin-master-game-hack In PDF document text
    • http://www.imperialaccountingfl.com/images/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/roblox-weird_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/code-free-robux_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn 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_off000047e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E4 25376 bytes
SHA-256: e8de2e73981ebf6d8a4264542caa81f937862e0c7f3e6bf18c8bda4c1c0c5856
font_01_sfnt_off00008179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8179 4020 bytes
SHA-256: dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5
font_02_sfnt_off00008f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F00 17712 bytes
SHA-256: 80118a78f95baa80ee89349241cf1d538d1c5fbd1ee094de5b41e3586bb22105

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