Malicious PDF — malware analysis report

Static analysis result for SHA-256 635109976f8cb21a…

MALICIOUS

PDF

45.3 KB Created: 2021-05-16 10:20:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: abc757ae0730ff8f913588955b8abf05 SHA-1: 93e701660ac1c9b2ff8b809b1e8d126c735e41ee SHA-256: 635109976f8cb21a213bb02b0d62b54cccf517ed921c09df8b6c21381ce45c70
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/como-generar-coin-master-free-spins-game-hack PDF link annotation
    • http://henrikedmark.com/images/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://henrikedmark.com/images/minecraft-tools_GM479516143.pdfIn PDF document text
    • http://henrikedmark.com/images/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/robux-match_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://henrikedmark.com/images/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • http://henrikedmark.com/images/free-roblox-templates_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000499d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499D 25108 bytes
SHA-256: dc922436cee9821a5e1691a22445c15a7467117054a550e2f8b8f6bf759a44ce
font_01_sfnt_off000083e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E0 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00008f0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F0A 18148 bytes
SHA-256: e996c84c04af77a25dc17a749cf1e0dcd354e3ea4fa8f611880f16c604898bf5

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