Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5992705546dde51…

MALICIOUS

PDF

44.9 KB Created: 2021-05-15 14:42:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: df4aff0b9554590ef6e9bf366b125a2d SHA-1: ab4168e17c46190d1d4758744422abea1b5d059e SHA-256: a5992705546dde513e664795b07223a7c1ce4d1f5a242d6d7d228f4b68c34174
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 0.9632

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-cheats-game-hack PDF link annotation
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/mistplay-robux_GM431946152.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
    • http://xn----ttbgfkcjc5fd.xn--p1ai/images/minecraft-apk-114_GM479516143.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_off000049de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49DE 24620 bytes
SHA-256: d274420036b6c5595a025f014b227045c776a646ae78ef399f20f5ab2db46c8c
font_01_sfnt_off00008247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8247 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off00008ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ECC 17712 bytes
SHA-256: 0cf37999a32b0b26e6dcf722a916a3c4a254350d50e55584564eaaa0ec63890c

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