Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5501bad9a43f096…

MALICIOUS

PDF

41.8 KB Created: 2021-05-12 09:28:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 50e43d09a8646ad2d50b901f55048d0e SHA-1: 91017f3894772b317ec3b25f527306322a1c3986 SHA-256: e5501bad9a43f096eff03dc7e8be0f3d7f0c8bc7c8514a4ab02449f292641b6c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to 'netcdn.xyz', which is flagged as malicious redirector infrastructure. The document body and heuristics indicate a lure for game hacks or generators, suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious workflow, likely leading to further compromise or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/freecoins-game-hack In PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/spin-link_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • https://www.hotel-forsthaus.com/images/free-google-play-promo-codes-coin-master_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a33.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A33 25036 bytes
SHA-256: 34a2953b6d6cd2938f5772e178e7a242801b8901fe56156ffed6cec818a728d2
font_01_sfnt_off000083c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C6 17380 bytes
SHA-256: b7451c9dd0ac59d2b5cb55b76db2f7cf076c87adc9efeb70e2d733c8c551e0a5

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