Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97566d16c8e4435…

MALICIOUS

PDF

44.8 KB Created: 2021-05-14 21:11:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a51be93dcdd842298cbf834c85296fe5 SHA-1: adae852c8009b17b907598d3b6e0c61b47e2b8ee SHA-256: e97566d16c8e443536777b058cf2eb508b18365e404c78c2122ee93a2b43b9a4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency and hacks, directing users to a suspicious URL. The presence of multiple embedded URLs and a high ML classifier score indicate malicious intent. While no scripts were explicitly extracted, the document structure and embedded links suggest it is designed to redirect users to potentially malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/431946152/websites-that-give-free-robux-game-hack PDF link annotation
    • http://www.backlineservice.nl/images/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://www.backlineservice.nl/images/free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • http://www.backlineservice.nl/images/robux-now_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.backlineservice.nl/images/robux-come_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.backlineservice.nl/images/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://www.backlineservice.nl/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.backlineservice.nl/images/roblox-lovenet_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.backlineservice.nl/images/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://www.backlineservice.nl/images/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://www.backlineservice.nl/images/114-4-hacks_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048a9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A9 26844 bytes
SHA-256: 1926b933ea0403b3e0024e9737846c8a9623683aace5a996eed7ae57193979a3
font_01_sfnt_off00008780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8780 19992 bytes
SHA-256: 5c6a5b9ce4dc6af73b07364cbd585883ca99ea3782e930f35b5f9814f2a9dadd

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