Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c32d685f2441ff3…

MALICIOUS

PDF

41.4 KB Created: 2021-05-13 23:15:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7c8218cbbd8ae22d96aa1d9108c37781 SHA-1: 7aeb1e2c1f0ede9d7329cd7f440e92202a114ffb SHA-256: 1c32d685f2441ff390b045253165974b16e883747ef36173f1d0d9daa3b17238
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures for 'free generators' and 'game hacks'. The embedded URL, https://netcdn.xyz/app/431946152/free-robux-card-codes-game-hack, is associated with malicious redirector infrastructure. The document body, though partially corrupted, contains text related to 'Free Robux Card Codes' and the authoring application, suggesting a phishing or scam attempt.

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/431946152/free-robux-card-codes-game-hack In PDF document text
    • https://www.kambati.co.za/images/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://www.kambati.co.za/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/real-roblox_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • https://www.kambati.co.za/images/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • https://www.kambati.co.za/images/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://www.kambati.co.za/images/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://www.kambati.co.za/images/gameoffice-net-hack-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_off00004838.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4838 24612 bytes
SHA-256: 453cfa791a356e4cb3fe140e1e4568ebca92dc4c11b52f5016f35ec07f4db0d0
font_01_sfnt_off00007f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0F 18416 bytes
SHA-256: 79c56a0f23d4fc34690a575a065be14b64911c3c5a3331038291264b4b7107af

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