Malicious PDF — malware analysis report

Static analysis result for SHA-256 11e21eddfcfce553…

MALICIOUS

PDF

33.5 KB Created: 2021-07-01 23:24:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d4ec5ca149abef15a16931f4eed729cd SHA-1: 39df3761d9070a327466e8492f23d430264452fc SHA-256: 11e21eddfcfce553fa3aee5ffe82d2bc89ece07d562a31a90504708f489c9fc5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links to external websites that are identified as malicious redirectors. These links are presented as 'free generators' or 'game hacks' to entice users into clicking them. The primary malicious URL identified is http://netcdn.co/app/406889139/free-coin-coin-master-game-hack, which is part of a known malicious redirector infrastructure.

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.co/app/406889139/free-coin-coin-master-game-hack In PDF document text
    • https://shjbottle.com/upload/files/roblox-2021-free-items_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/roblox-royale-high-halo-hack_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-robux-ack_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-do-u-hack-the-power-plant-roblox_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-bundles-in-roblox_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/roblox-gift-card-codes-for-free-2021_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/cheat-roblox-offensive_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/is-it-ileagal-to-hack-on-a-game-in-roblox_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-robux-redboy_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_off00002edd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EDD 22476 bytes
SHA-256: c4feec5102d971810efa5426010ad990591a74a62bd977d30b9771e5e8c34a6d
font_01_sfnt_off00006137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6137 17996 bytes
SHA-256: e3fb1ca426c01543f38f1d1129ae452bef28a40365fbe99abf1b239340e30419

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