Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cae917b95a0bd1d…

MALICIOUS

PDF

34.2 KB Created: 2021-07-10 02:16:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6ae200e3cc282d79e224d4109227b894 SHA-1: 6b006a723189f0bdcd7e33540d7da6c58fd05645 SHA-256: 9cae917b95a0bd1dbfe73afecb2a1678332ef9f5cc5a17c25dfb0779d92851d2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and generators, specifically for Coin Master and Roblox. It contains multiple links, with the primary one redirecting to malicious infrastructure. The document body and embedded heuristics confirm the malicious intent to redirect users to potentially harmful content. No scripts were extracted from this sample, limiting the analysis of further stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/how-to-get-more-spins-on-coin-master-game-hack In PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-get-free-codes-in-roblox-bee-swarm_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-roblox-gift-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-how-to-hack-people-39_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/an-app-that-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-cp_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/haw-to-get-robux-in-hack_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/frre-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/cheat-engine-btools-roblox-hack_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002fba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FBA 22924 bytes
SHA-256: 8cfc880e1f8678ac800273b49b43a4f99dd51f5a9184a8f578476637d11d31f9
font_01_sfnt_off0000632f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632F 18176 bytes
SHA-256: 072a98bed821139b72faa0857d5d79503d06e00f528252fbc36dcee34d4ba15f

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