Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b73e5d2628d5c50…

MALICIOUS

PDF

45.6 KB Created: 2021-05-17 10:45:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2df8bf6bceb1a64401ffcf58527a4c07 SHA-1: 963a3dfe67239a497af2cb66dbd301e1105a2384 SHA-256: 5b73e5d2628d5c50879f9f96ba86e01af94268848536ba1d7d46e204b624c89a
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 0.9980

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/how-to-get-free-roblox-premium-game-hack PDF link annotation
    • http://aviaprofsoyuz.info/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/2021-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-free-coins-2021_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_off00004a39.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A39 30136 bytes
SHA-256: a990227a19b02e50da41ae10cb7adc6fa4b582f85be1080cbb6429f04ffec40f
font_01_sfnt_off00008e58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E58 18888 bytes
SHA-256: 3ba61bc9b3b11ac9a9f3633ee28239b24940f03e179bf58c89719787cf1740e7

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