Malicious PDF — malware analysis report

Static analysis result for SHA-256 658c0815c0cbf004…

MALICIOUS

PDF

42.4 KB Created: 2021-05-12 02:31:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 13533ed118eb8a998e25265b4f6752ed SHA-1: 6a5c474783cff6021f3b95459b190a421968ac41 SHA-256: 658c0815c0cbf0047cf50f2e80cb7d3def0cae4d46766c3292fb1c2f7b5c42fb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, under the guise of game hacks and generators. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded links and the nature of the lures suggest an intent to redirect users to potentially harmful content or initiate further malicious downloads.

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/coin-master-hack-review-game-hack In PDF document text
    • https://doingimc.com/image/data/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://doingimc.com/image/data/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-free-spins-and-coins-hack_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_off00004a88.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A88 25424 bytes
SHA-256: 4d1351d33760aa31548eed38fdec0d14f419af9f18dc1435b125e3a3b3e914d7
font_01_sfnt_off000083fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83FE 17996 bytes
SHA-256: bfe601b020b171f100e70e38fab7406fb887819b27a361e00f5b71bc8f64446b

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