Malicious PDF — malware analysis report

Static analysis result for SHA-256 24832fa3323750a4…

MALICIOUS

PDF

41.6 KB Created: 2021-05-16 12:31:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bf4d3135936589682782870735e5996c SHA-1: 191f808be329acc07732fb413e9a68e05abe8a5b SHA-256: 24832fa3323750a4113cd7c626e8cbcc0a4658c0ec4ab9ac2ed951ba87f9f7f9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure appears to be a 'Coin Master' hack, directing users to a URL that is flagged as a known malicious redirector. The document's structure and embedded links suggest an attempt to trick users into visiting potentially harmful websites, likely for further exploitation 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/coin-master-blogspot-links-game-hack In PDF document text
    • https://cluster-consulting.com/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-safe_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/is-coin-master-free_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/picture-roblox_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/easy-robux-com_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-hack-2021-without-human-verification_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_off0000470f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x470F 24460 bytes
SHA-256: cb8aaf6876cf6c1ebef03e1bc7c2dbdd0537a16413e2543244bc2a06ba4cf1e4
font_01_sfnt_off00007f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F55 18472 bytes
SHA-256: 3a9541160e4b92d794687f49994e2eb1b208d5ca6227e81bc9e0881bb6ba4ccc

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