Malicious PDF — malware analysis report

Static analysis result for SHA-256 af43ea45bb01563a…

MALICIOUS

PDF

43.6 KB Created: 2021-05-14 08:42:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6b3f7cc8b44ff4500a56a3ada10613e0 SHA-1: 528a3dfcafbb7333f91dec1af0312ee313121e2d SHA-256: af43ea45bb01563ae3f09b40ee0a1d9b55d39c51d8330848978d45bd85ef94d3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appear to be game-related hacks or generators. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded links and the nature of the lures suggest a phishing campaign aiming to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/blogspot-coin-master-free-spins-game-hack In PDF document text
    • http://make-up-stettler.ch/images/make-free-robux_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • http://make-up-stettler.ch/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/getrobux-now_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://make-up-stettler.ch/images/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bdd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BDD 26056 bytes
SHA-256: da0f4f33e59567225d4c3a296786814f2594b7c2972a617c23710efa4e75da97
font_01_sfnt_off0000878f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x878F 18464 bytes
SHA-256: af5d8a2e7c6ce5c46c231007036c3c30da92f088fd5d2b237af1a5c438451922

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