Malicious PDF — malware analysis report

Static analysis result for SHA-256 42cb7fb9525894d3…

MALICIOUS

PDF

41.8 KB Created: 2021-05-16 06:05:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 18b5d172b8b451d4b6bb4f24bb584fbd SHA-1: f3e6e7e544bec3da907080d7ed0c667ffae154c9 SHA-256: 42cb7fb9525894d3469f9445325bc9e96beb0d9e76fd4fe5001de24d7b675bb9
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 0.9971

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/coin-master-free-400-spin-link-game-hack PDF link annotation
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/i-robux_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/rbx-earn_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/free-spins-and-coins-for-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_off00004879.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4879 24552 bytes
SHA-256: 94eefb09e5b0aabce15fe6545c2c715298e59ee6930d572b1761b603978aa2af
font_01_sfnt_off000080d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D5 18292 bytes
SHA-256: 505b5c60595e7dab75bf8e15101a091f127ed76b3b64336be73d354ea9943c57

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